10-K Filing

SEACOR MARINE HOLDINGS INC. CIK: 1690334 FY 2021

Filing Information

Form Type	10-K
Accession Number	`0001564590-22-009707`
Period End Date	20211231
Filing Date	20220310
Fiscal Year	2021
Fiscal Period	FY
XBRL Instance	smhi-10k_20211231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 114 Income Statement 103 Cash Flow Statement 142 Stockholders Equity 41 Comprehensive Income 28

Balance Sheet 114 line items

Line Item	Tag	Value	Unit	Period
Trade receivables, allowance for credit loss	`AllowanceForDoubtfulAccountsReceivableCurrent`	$582.00K	USD	Point-in-time
Trade receivables, allowance for credit loss	`AllowanceForDoubtfulAccountsReceivableCurrent`	$1.31M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.67M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$37.62M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	26.12M	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$3.35M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$3.60M	USD	Point-in-time
Shares held in treasury (in shares)	`TreasuryStockShares`	127,887.00	shares	Point-in-time
Shares held in treasury (in shares)	`TreasuryStockShares`	73,284.00	shares	Point-in-time
Trade, net of allowance for credit loss accounts of $1,312 and $582 in 2021 and 2020, respectively	`AccountsReceivableNetCurrent`	$45.33M	USD	Point-in-time
Trade, net of allowance for credit loss accounts of $1,312 and $582 in 2021 and 2020, respectively	`AccountsReceivableNetCurrent`	$55.54M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$10.92M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$6.12M	USD	Point-in-time
Receivable from SEACOR Holdings	`DueFromAffiliateCurrent`	$18.83M	USD	Point-in-time
Tax receivable	`IncomeTaxesReceivable`	$13.56M	USD	Point-in-time
Tax receivable	`IncomeTaxesReceivable`	$1.24M	USD	Point-in-time
Inventories	`InventoryNet`	$576.00K	USD	Point-in-time
Inventories	`InventoryNet`	$928.00K	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$3.23M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$3.73M	USD	Point-in-time
Assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$50.23M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$108.78M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$178.70M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.01B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$899.02M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.03B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$317.30M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$291.54M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$308.92M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$590.11M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$707.99M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$721.34M	USD	Point-in-time
Construction in progress	`ConstructionInProgressGross`	$15.53M	USD	Point-in-time
Construction in progress	`ConstructionInProgressGross`	$32.33M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$753.66M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$723.52M	USD	Point-in-time
Right-of-use asset - operating leases	`OperatingLeaseRightOfUseAsset`	$7.13M	USD	Point-in-time
Right-of-use asset - operating leases	`OperatingLeaseRightOfUseAsset`	$6.61M	USD	Point-in-time
Right-of-use asset - finance leases	`FinanceLeaseRightOfUseAsset`	$100.00K	USD	Point-in-time
Right-of-use asset - finance leases	`FinanceLeaseRightOfUseAsset`	$129.00K	USD	Point-in-time
Investments, at equity, and advances to 50% or less owned companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$71.73M	USD	Point-in-time
Investments, at equity, and advances to 50% or less owned companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$75.31M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$1.77M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$2.73M	USD	Point-in-time
Total assets	`Assets`	$912.50M	USD	Point-in-time
Total assets	`Assets`	$1.02B	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$1.99M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$7.03M	USD	Point-in-time
Current portion of finance lease liabilities	`FinanceLeaseLiabilityCurrent`	$33.00K	USD	Point-in-time
Current portion of finance lease liabilities	`FinanceLeaseLiabilityCurrent`	$36.00K	USD	Point-in-time
Recourse	`RecourseLongTermDebtCurrent`	$31.60M	USD	Point-in-time
Recourse	`RecourseLongTermDebtCurrent`	$26.73M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtCurrent`	$5.64M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$28.42M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$29.97M	USD	Point-in-time
Due to SEACOR Holdings	`DueToAffiliateCurrent`	$274.00K	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$3.71M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$1.74M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$1.66M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$2.27M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$2.44M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$11.33M	USD	Point-in-time
Deferred revenue and unearned revenue	`ContractWithCustomerLiabilityCurrent`	$4.45M	USD	Point-in-time
Deferred revenue and unearned revenue	`ContractWithCustomerLiabilityCurrent`	$1.61M	USD	Point-in-time
Accrued insurance deductibles and premiums	`AccruedInsuranceCurrent`	$2.27M	USD	Point-in-time
Accrued insurance deductibles and premiums	`AccruedInsuranceCurrent`	$2.72M	USD	Point-in-time
Accrued professional fees	`AccruedProfessionalFeesCurrent`	$1.21M	USD	Point-in-time
Accrued professional fees	`AccruedProfessionalFeesCurrent`	$975.00K	USD	Point-in-time
Derivatives	`DerivativeLiabilitiesCurrent`	$4.59M	USD	Point-in-time
Derivatives	`DerivativeLiabilitiesCurrent`	$1.83M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$4.44M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$6.56M	USD	Point-in-time
Liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$30.93M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$131.80M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$84.67M	USD	Point-in-time
Long-term operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$4.88M	USD	Point-in-time
Long-term operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$4.34M	USD	Point-in-time
Long-term finance lease liabilities	`FinanceLeaseLiabilityNoncurrent`	$76.00K	USD	Point-in-time
Long-term finance lease liabilities	`FinanceLeaseLiabilityNoncurrent`	$105.00K	USD	Point-in-time
Recourse	`RecourseLongTermDebtNoncurrent`	$327.30M	USD	Point-in-time
Recourse	`RecourseLongTermDebtNoncurrent`	$328.69M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtNoncurrent`	$5.46M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtNoncurrent`	$111.82M	USD	Point-in-time
Conversion option liability on convertible senior notes	`DerivativeLiabilitiesNoncurrent`	$2.00K	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$40.68M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$35.82M	USD	Point-in-time
Deferred gains and other liabilities	`OtherLiabilitiesNoncurrent`	$2.89M	USD	Point-in-time
Deferred gains and other liabilities	`OtherLiabilitiesNoncurrent`	$3.24M	USD	Point-in-time
Total liabilities	`Liabilities`	$615.83M	USD	Point-in-time
Total liabilities	`Liabilities`	$465.96M	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 26,120,124 and 23,504,050 shares issued in 2021 and 2020, respectively	`CommonStockValue`	$235.00K	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 26,120,124 and 23,504,050 shares issued in 2021 and 2020, respectively	`CommonStockValue`	$262.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$461.93M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$451.18M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-51.84M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-22.91M	USD	Point-in-time
Shares held in treasury of 127,887 and 73,284 in 2021 and 2020, respectively, at cost	`TreasuryStockValue`	$1.12M	USD	Point-in-time
Shares held in treasury of 127,887 and 73,284 in 2021 and 2020, respectively, at cost	`TreasuryStockValue`	$848.00K	USD	Point-in-time
Accumulated other comprehensive income, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$2.79M	USD	Point-in-time
Accumulated other comprehensive income, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$8.05M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$401.52M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$446.22M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$320.00K	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$319.00K	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$446.54M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$565.35M	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$1.02B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$912.50M	USD	Point-in-time

Income Statement 103 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$170.94M	USD	Annual
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$174.45M	USD	Annual
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$141.84M	USD	Annual
Operating	`OperatingCostsAndExpenses`	$91.14M	USD	Annual
Operating	`OperatingCostsAndExpenses`	$109.52M	USD	Annual
Operating	`OperatingCostsAndExpenses`	$127.41M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$37.64M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$40.05M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$39.79M	USD	Annual
Lease expense	`LeaseExpense`	$6.08M	USD	Annual
Lease expense	`LeaseExpense`	$15.84M	USD	Annual
Lease expense	`LeaseExpense`	$7.53M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.40M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.17M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.17M	USD	Annual
Costs and Expenses	`CostsAndExpenses`	$195.89M	USD	Annual
Costs and Expenses	`CostsAndExpenses`	$222.32M	USD	Annual
Costs and Expenses	`CostsAndExpenses`	$228.53M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-17.59M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$20.44M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-6.46M	USD	Annual
Operating Loss	`OperatingIncomeLoss`	$-71.64M	USD	Annual
Operating Loss	`OperatingIncomeLoss`	$-37.15M	USD	Annual
Operating Loss	`OperatingIncomeLoss`	$-54.33M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.39M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.30M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.27M	USD	Annual
Interest expense	`InterestExpense`	$28.96M	USD	Annual
Interest expense	`InterestExpense`	$30.69M	USD	Annual
Interest expense	`InterestExpense`	$28.11M	USD	Annual
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$7.00K	USD	Annual
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$47.00K	USD	Annual
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$108.00K	USD	Annual
Gain on debt extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$61.99M	USD	Annual
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$71.00K	USD	Annual
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$391.00K	USD	Annual
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$4.31M	USD	Annual
Foreign currency losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-2.54M	USD	Annual
Foreign currency losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-1.29M	USD	Annual
Foreign currency losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-1.24M	USD	Annual
Gain (Loss) from return of investments in 50% or less owned companies and other, net	`GainLossFromReturnOfInvestmentsAndOtherNet`	$9.44M	USD	Annual
Gain (Loss) from return of investments in 50% or less owned companies and other, net	`GainLossFromReturnOfInvestmentsAndOtherNet`	$-1.00K	USD	Annual
Gain (Loss) from return of investments in 50% or less owned companies and other, net	`GainLossFromReturnOfInvestmentsAndOtherNet`	$-19.00K	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-26.47M	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-30.15M	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$43.77M	USD	Annual
Income (Loss) from Continuing Operations Before Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$6.63M	USD	Annual
Income (Loss) from Continuing Operations Before Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-84.47M	USD	Annual
Income (Loss) from Continuing Operations Before Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-98.11M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$6.63M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$-25.18M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$4.92M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$2.26M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-12.89M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$4.86M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$11.49M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$-22.92M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$-7.97M	USD	Annual
Loss Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-76.50M	USD	Annual
Loss Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-75.18M	USD	Annual
Loss Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-4.87M	USD	Annual
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$15.08M	USD	Annual
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$-14.46M	USD	Annual
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$-8.16M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperations`	$10.21M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperations`	$-83.35M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperations`	$-90.96M	USD	Annual
Income (Loss) on Discontinued Operations, Net of Tax (see Note 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-7.73M	USD	Annual
Income (Loss) on Discontinued Operations, Net of Tax (see Note 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$22.93M	USD	Annual
Income (Loss) on Discontinued Operations, Net of Tax (see Note 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$364.00K	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-98.69M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$33.14M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-82.98M	USD	Annual
Net Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$-4.07M	USD	Annual
Net Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00K	USD	Annual
Net Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$-5.86M	USD	Annual
Net Income (Loss) attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$33.14M	USD	Annual
Net Income (Loss) attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$-92.84M	USD	Annual
Net Income (Loss) attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$-78.92M	USD	Annual
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$-3.20	USD	Annual
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.40	USD	Annual
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$-3.62	USD	Annual
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-3.62	USD	Annual
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-3.20	USD	Annual
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.40	USD	Annual
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.33	USD	Annual
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.90	USD	Annual
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.02	USD	Annual
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.02	USD	Annual
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.33	USD	Annual
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.90	USD	Annual
Basic	`EarningsPerShareBasic`	$-3.18	USD	Annual
Basic	`EarningsPerShareBasic`	$1.30	USD	Annual
Basic	`EarningsPerShareBasic`	$-3.95	USD	Annual
Diluted	`EarningsPerShareDiluted`	$-3.18	USD	Annual
Diluted	`EarningsPerShareDiluted`	$-3.95	USD	Annual
Diluted	`EarningsPerShareDiluted`	$1.30	USD	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	24.79M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	25.44M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	23.51M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	24.79M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	23.51M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	25.50M	shares	Annual

Cash Flow Statement 142 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-100.07M	USD	Annual
Net Income (Loss)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-83.35M	USD	Annual
Net Income (Loss)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$33.14M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.40M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.17M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.17M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCosts`	$1.11M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCosts`	$1.10M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCosts`	$1.05M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$5.36M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$5.17M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$4.65M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$6.87M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$5.66M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$6.67M	USD	Annual
Allowance for credit losses	`ProvisionForDoubtfulAccounts`	$230.00K	USD	Annual
Allowance for credit losses	`ProvisionForDoubtfulAccounts`	$863.00K	USD	Annual
Allowance for credit losses	`ProvisionForDoubtfulAccounts`	$-404.00K	USD	Annual
(Gains) Losses from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-17.59M	USD	Annual
(Gains) Losses from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$20.44M	USD	Annual
(Gains) Losses from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-6.46M	USD	Annual
Gain from return of investments in 50% or less owned companies	`GainLossFromReturnOfInvestments`	$9.44M	USD	Annual
Gain on debt extinguishment	`GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost`	$62.75M	USD	Annual
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$71.00K	USD	Annual
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$391.00K	USD	Annual
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$4.31M	USD	Annual
Interest on finance lease	`ProceedsFromInterestOnFinanceLeases`	$1.00K	USD	Annual
Interest on finance lease	`ProceedsFromInterestOnFinanceLeases`	$4.00K	USD	Annual
Cash settlement payments on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentsOperatingActivities`	$1.33M	USD	Annual
Cash settlement payments on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentsOperatingActivities`	$482.00K	USD	Annual
Cash settlement payments on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentsOperatingActivities`	$2.15M	USD	Annual
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-2.54M	USD	Annual
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-1.29M	USD	Annual
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-1.24M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$2.26M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-12.89M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$4.86M	USD	Annual
Equity (earnings) losses	`IncomeLossFromEquityMethodInvestments`	$15.08M	USD	Annual
Equity (earnings) losses	`IncomeLossFromEquityMethodInvestments`	$-14.46M	USD	Annual
Equity (earnings) losses	`IncomeLossFromEquityMethodInvestments`	$-8.16M	USD	Annual
Dividends received from equity investees	`ProceedsFromDividendsReceived`	$5.33M	USD	Annual
Dividends received from equity investees	`ProceedsFromDividendsReceived`	$2.07M	USD	Annual
Dividends received from equity investees	`ProceedsFromDividendsReceived`	$2.12M	USD	Annual
Accounts receivables	`IncreaseDecreaseInReceivables`	$-10.18M	USD	Annual
Accounts receivables	`IncreaseDecreaseInReceivables`	$-22.44M	USD	Annual
Accounts receivables	`IncreaseDecreaseInReceivables`	$30.16M	USD	Annual
Other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-554.00K	USD	Annual
Other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-6.53M	USD	Annual
Other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-3.11M	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$957.00K	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$471.00K	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-18.34M	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$-29.72M	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$1.66M	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$8.97M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$20.81M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$44.77M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$7.00M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$20.67M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$30.14M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$55.32M	USD	Annual
Cash impact of sale of ERRV fleet	`PaymentsForProceedsFromCashImpactOfSaleOfERRVFleet`	$5.14M	USD	Annual
Purchase of subsidiary from joint venture	`PaymentsToAcquireProceedsFromDivestitureInterestInJointVenture`	$8.45M	USD	Annual
Proceeds from sale of Windcat Workboats, net of transaction costs and cash sold	`ProceedsFromSaleOfPropertyNetOfTransactionCostsAndCashSold`	$38.72M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$17.39M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$3.01M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$2.21M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ProceedsFromInvestmentsDistributionReturnOfCapital`	$461.00K	USD	Annual
Excess distributions from equity investees	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$9.44M	USD	Annual
Construction reserve funds transferred to short-term cash	`ConstructionReserveFundsTransferredToShortTermCash`	$3.75M	USD	Annual
Construction reserve funds utilized	`PaymentsForProceedsFromOtherInvestingActivities`	$-9.15M	USD	Annual
Construction reserve funds utilized	`PaymentsForProceedsFromOtherInvestingActivities`	$-15.17M	USD	Annual
Principal payments on notes due from equity investees	`RepaymentOfNotesReceivableFromRelatedParties`	$1.72M	USD	Annual
Principal payments on notes due from equity investees	`RepaymentOfNotesReceivableFromRelatedParties`	$3.35M	USD	Annual
Cash received from acquisition of 50% or less owned company	`ProceedsFromSaleOfEquityMethodInvestments`	$172.00K	USD	Annual
Net cash provided by investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$3.82M	USD	Annual
Net cash provided by investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$71.80M	USD	Annual
Net cash provided by investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$31.03M	USD	Annual
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$78.12M	USD	Annual
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$23.97M	USD	Annual
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$22.60M	USD	Annual
Payments on debt extinguishment costs	`PaymentsOfDebtExtinguishmentCosts`	$755.00K	USD	Annual
Proceeds from exercise of stock options and warrants	`ProceedsFromStockOptionsAndWarrantsExercised`	$1.42M	USD	Annual
Proceeds from exercise of stock options and warrants	`ProceedsFromStockOptionsAndWarrantsExercised`	$1.00K	USD	Annual
Proceeds from exercise of stock options and warrants	`ProceedsFromStockOptionsAndWarrantsExercised`	$2.00K	USD	Annual
Payments on finance lease	`FinanceLeasePrincipalPayments`	$30.00K	USD	Annual
Issuance of stock	`ProceedsFromIssuanceOfCommonStock`	$10.00K	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentToSubsidiarySharesFromNoncontrollingInterests`	$3.39M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-25.94M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-78.90M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-22.60M	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-22.00K	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$30.00K	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-16.62M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash, Continuing Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseContinuingOperationsIncludingExchangeRateEffect`	$-9.87M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash, Continuing Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseContinuingOperationsIncludingExchangeRateEffect`	$-48.47M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash, Continuing Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseContinuingOperationsIncludingExchangeRateEffect`	$1.85M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$-171.00K	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$8.22M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$13.78M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-8.32M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-15.39M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$941.00K	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Effects of Exchange Rate Changes on Cash, Restricted Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations`	$119.00K	USD	Annual
Effects of Exchange Rate Changes on Cash, Restricted Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations`	$1.67M	USD	Annual
Effects of Exchange Rate Changes on Cash, Restricted Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations`	-	USD	Annual
Net (Decrease) Increase in Cash, Restricted Cash and Cash Equivalents on Discontinued Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperationsIncludingExchangeRateEffect`	$-171.00K	USD	Annual
Net (Decrease) Increase in Cash, Restricted Cash and Cash Equivalents on Discontinued Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperationsIncludingExchangeRateEffect`	$64.00K	USD	Annual
Net (Decrease) Increase in Cash, Restricted Cash and Cash Equivalents on Discontinued Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperationsIncludingExchangeRateEffect`	$959.00K	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$1.68M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-9.80M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-47.51M	USD	Annual
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$87.05M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$41.22M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$96.85M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$39.54M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$87.05M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$41.22M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$96.85M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$39.54M	USD	Point-in-time
Cash paid for interest, excluding capitalized interest	`InterestPaidNet`	$24.14M	USD	Annual
Cash paid for interest, excluding capitalized interest	`InterestPaidNet`	$21.48M	USD	Annual
Cash paid for interest, excluding capitalized interest	`InterestPaidNet`	$21.98M	USD	Annual
Income taxes refunded, net	`IncomeTaxesPaidNet`	$32.76M	USD	Annual
Income taxes refunded, net	`IncomeTaxesPaidNet`	$1.09M	USD	Annual
Income taxes refunded, net	`IncomeTaxesPaidNet`	$2.00M	USD	Annual
Increase in property, plant and equipment related to an acquisition	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$142.28M	USD	Annual
Decrease in joint venture investments related to an acquisition	`NoncashDecreaseInJointVentureInvestmentsRelatedToAcquisition`	$22.22M	USD	Annual
Distribution from equity investee	`TransferOfInvestments`	$2.54M	USD	Annual
Acquisition of 50% or less owned company	`NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1`	$23.04M	USD	Annual
Increase in long-term debt related to an acquisition	`NoncashOrPartNoncashAcquisitionDebtAssumed1`	$75.57M	USD	Annual
Increase in long-term debt related to asset purchases	`NoncashIncreaseInLongTermDebtRelatedToAssetPurchases`	$6.50M	USD	Annual
Increase in long-term debt related to asset purchases	`NoncashIncreaseInLongTermDebtRelatedToAssetPurchases`	$21.25M	USD	Annual
Increase in long-term debt related to asset purchases	`NoncashIncreaseInLongTermDebtRelatedToAssetPurchases`	$10.63M	USD	Annual
Decrease in debt related to debt settlement	`IncreaseDecreaseInDebtRelatedToDebtSettlement`	$62.75M	USD	Annual
Increase in capital expenditures in accounts payable and accrued liabilities	`IncreaseDecreaseInCapitalExpendituresInAccountsPayableAndAccruedLiabilities`	$10.38M	USD	Annual
Increase in capital expenditures in accounts payable and accrued liabilities	`IncreaseDecreaseInCapitalExpendituresInAccountsPayableAndAccruedLiabilities`	$3.19M	USD	Annual
Increase in capital expenditures in accounts payable and accrued liabilities	`IncreaseDecreaseInCapitalExpendituresInAccountsPayableAndAccruedLiabilities`	$2.41M	USD	Annual
Recognition of a new right-of-use asset - operating leases	`RecognitionOfNewRightOfUseAssetOperatingLeases`	$3.58M	USD	Annual

Stockholders Equity 41 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$446.54M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$565.35M	USD	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	26.12M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$6.60M	USD	Annual
Restricted stock grants	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$3.00K	USD	Annual
Restricted stock grants	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$2.00K	USD	Annual
Restricted stock grants	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$8.00K	USD	Annual
Cancellation of grants and options	`AdjustmentToAdditionalPaidInCapitalValueCancellationOfGrantsAndOptions`	$101.00K	USD	Annual
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$5.05M	USD	Annual
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.97M	USD	Annual
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$5.00M	USD	Annual
Exercise of options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$1.42M	USD	Annual
Exercise of options (in shares)	`StockIssuedDuringPeriodSharesStockOptionsExercised`	0.00	shares	Annual
Exercise of options (in shares)	`StockIssuedDuringPeriodSharesStockOptionsExercised`	0.00	shares	Annual
Exercise of warrants	`StockRepurchasedDuringPeriodValueExerciseOfWarrants`	$3.00K	USD	Annual
Exercise of warrants	`StockRepurchasedDuringPeriodValueExerciseOfWarrants`	$1.00K	USD	Annual
Exercise of warrants	`StockRepurchasedDuringPeriodValueExerciseOfWarrants`	$2.00K	USD	Annual
Restricted stock vesting	`TreasuryStockValueAcquiredCostMethod`	$178.00K	USD	Annual
Restricted stock vesting	`TreasuryStockValueAcquiredCostMethod`	$579.00K	USD	Annual
Restricted stock vesting	`TreasuryStockValueAcquiredCostMethod`	$272.00K	USD	Annual
Director share awards	`StockIssuedDuringPeriodValueIssuedForServices`	$755.00K	USD	Annual
Director share awards	`StockIssuedDuringPeriodValueIssuedForServices`	$894.00K	USD	Annual
Director share awards	`StockIssuedDuringPeriodValueIssuedForServices`	$437.00K	USD	Annual
Acquisition of consolidated joint venture	`StockGrantedDuringPeriodValueSharebasedCompensation`	$2.11M	USD	Annual
Acquisition of 50% or less owned company	`StockIssuedDuringPeriodValueAcquisitions`	$5.33M	USD	Annual
Sale of Windcat Workboats	`SaleOfWindcatWorkboats`	$4.20M	USD	Annual
Sale of Standby Safety Fleet	`SaleOfStandbySafetyFleet`	$17.40M	USD	Annual
Dissolution of entity	`DissolutionOfEntity`	$62.00K	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-98.69M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$33.14M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-82.98M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$5.26M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.24M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$18.34M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$446.54M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$565.35M	USD	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	26.12M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time

Comprehensive Income 28 line items

Line Item	Tag	Value	Unit	Period
Reclassification of derivative losses on cash flow hedges to equity in losses	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	Annual
Reclassification of derivative losses on cash flow hedges to equity in losses	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	Annual
Reclassification of derivative losses on cash flow hedges to equity in losses	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	Annual
Net Income (Loss)	`ProfitLoss`	$-98.69M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$33.14M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-82.98M	USD	Annual
Foreign currency translation gains, net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$3.99M	USD	Annual
Foreign currency translation gains, net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$20.16M	USD	Annual
Foreign currency translation gains, net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$2.11M	USD	Annual
Derivative gains (losses) on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$219.00K	USD	Annual
Derivative gains (losses) on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-1.90M	USD	Annual
Derivative gains (losses) on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-2.14M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossBeforeTax`	$18.16M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossBeforeTax`	$1.24M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossBeforeTax`	$5.26M	USD	Annual
Income tax benefit	`OtherComprehensiveIncomeLossTax`	$-173.00K	USD	Annual
Other comprehensive income, net	`OtherComprehensiveIncomeLossNetOfTax`	$5.26M	USD	Annual
Other comprehensive income, net	`OtherComprehensiveIncomeLossNetOfTax`	$1.24M	USD	Annual
Other comprehensive income, net	`OtherComprehensiveIncomeLossNetOfTax`	$18.34M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-81.74M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$38.40M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-80.36M	USD	Annual
Comprehensive Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00K	USD	Annual
Comprehensive Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.07M	USD	Annual
Comprehensive Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-5.86M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-77.67M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$38.40M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-74.50M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.