10-Q Filing

SEACOR HOLDINGS INC /NEW/ CIK: 859598 Q3 2018

Filing Information

Form Type	10-Q
Accession Number	`0000859598-18-000090`
Period End Date	20180930
Filing Date	20181024
Fiscal Year	2018
Fiscal Period	Q3
XBRL Instance	ckh-20180930.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 97 Income Statement 128 Cash Flow Statement 65 Stockholders Equity 23 Comprehensive Income 44

Balance Sheet 97 line items

Line Item	Tag	Value	Unit	Period
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$2.39M	USD	Point-in-time
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$3.46M	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`	$239.25M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$267.16M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$324.56M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Restricted cash and restricted cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$2.98M	USD	Point-in-time
Restricted cash and restricted cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$2.99M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	38.91M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	38.66M	shares	Point-in-time
Treasury stock, shares held in treasury (in shares)	`TreasuryStockShares`	20.72M	shares	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$41.45M	USD	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$42.76M	USD	Point-in-time
Treasury stock, shares held in treasury (in shares)	`TreasuryStockShares`	20.67M	shares	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Trade, net of allowance for doubtful accounts of $3,465 and $2,390 in 2018 and 2017, respectively	`AccountsReceivableNetCurrent`	$151.22M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Trade, net of allowance for doubtful accounts of $3,465 and $2,390 in 2018 and 2017, respectively	`AccountsReceivableNetCurrent`	$110.47M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Other	`OtherReceivablesNetCurrent`	$33.87M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$45.20M	USD	Point-in-time
Inventories	`InventoryNet`	$3.95M	USD	Point-in-time
Inventories	`InventoryNet`	$4.38M	USD	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Inventories	`InventoryNet`	$5.14M	USD	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$6.09M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$6.59M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$576.64M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$440.30M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.38B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.40B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.51B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$502.54M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$545.18M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$487.05M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$1.02B	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$877.92M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$858.71M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$149.18M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$173.44M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$175.39M	USD	Point-in-time
Construction Reserve Funds	`RestrictedCashAndCashEquivalentsNoncurrent`	$51.34M	USD	Point-in-time
Construction Reserve Funds	`RestrictedCashAndCashEquivalentsNoncurrent`	$5.91M	USD	Point-in-time
Goodwill	`Goodwill`	$32.76M	USD	Point-in-time
Goodwill	`Goodwill`	$32.77M	USD	Point-in-time
Goodwill	`Goodwill`	$32.77M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$25.72M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$28.11M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$30.66M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$8.94M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$9.47M	USD	Point-in-time
Total Assets	`Assets`	$1.61B	USD	Point-in-time
Total Assets	`Assets`	$1.78B	USD	Point-in-time
Total Assets	`Assets`	$1.66B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$155.74M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$77.84M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$44.01M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$56.53M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$57.33M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$66.18M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$278.45M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$179.19M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$501.50M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$372.66M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$101.42M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$99.56M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsandOtherLiabilitiesNoncurrent`	$60.50M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsandOtherLiabilitiesNoncurrent`	$77.86M	USD	Point-in-time
Total liabilities	`Liabilities`	$859.98M	USD	Point-in-time
Total liabilities	`Liabilities`	$811.17M	USD	Point-in-time
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	`PreferredStockValue`	-	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 38,914,817 and 38,656,505 shares issued in 2018 and 2017, respectively	`CommonStockValue`	$387.00K	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 38,914,817 and 38,656,505 shares issued in 2018 and 2017, respectively	`CommonStockValue`	$389.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.57B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.59B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$479.50M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$419.13M	USD	Point-in-time
Shares held in treasury of 20,671,627 and 20,716,878 in 2018 and 2017, respectively, at cost	`TreasuryStockValue`	$1.37B	USD	Point-in-time
Shares held in treasury of 20,671,627 and 20,716,878 in 2018 and 2017, respectively, at cost	`TreasuryStockValue`	$1.37B	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-545.00K	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-444.00K	USD	Point-in-time
Stockholders' equity attributable to parent, total	`StockholdersEquity`	$706.10M	USD	Point-in-time
Stockholders' equity attributable to parent, total	`StockholdersEquity`	$623.68M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$140.60M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$129.68M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$846.69M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$1.61B	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$1.66B	USD	Point-in-time

Income Statement 128 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`Revenues`	$621.91M	USD	3 Qtrs
Operating Revenues	`Revenues`	$441.50M	USD	3 Qtrs
Operating Revenues	`Revenues`	$220.26M	USD	1 Quarter
Operating Revenues	`Revenues`	$176.60M	USD	1 Quarter
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$125.69M	USD	1 Quarter
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$147.53M	USD	1 Quarter
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$441.47M	USD	3 Qtrs
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$301.27M	USD	3 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$20.53M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$26.08M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$76.19M	USD	3 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$68.95M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$54.69M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$20.50M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.07M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$18.62M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$192.23M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$166.72M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$424.91M	USD	3 Qtrs
Total costs and expenses	`CostsAndExpenses`	$574.73M	USD	3 Qtrs
Gains on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$13.57M	USD	3 Qtrs
Gains on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$10.92M	USD	3 Qtrs
Gains on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$6.02M	USD	1 Quarter
Gains on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$5.21M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$27.50M	USD	3 Qtrs
Operating Income	`OperatingIncomeLoss`	$60.75M	USD	3 Qtrs
Operating Income	`OperatingIncomeLoss`	$15.09M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$34.05M	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$2.45M	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$6.49M	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$2.37M	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$6.65M	USD	3 Qtrs
Interest expense	`InterestExpense`	$25.50M	USD	3 Qtrs
Interest expense	`InterestExpense`	$8.34M	USD	1 Quarter
Interest expense	`InterestExpense`	$31.10M	USD	3 Qtrs
Interest expense	`InterestExpense`	$9.12M	USD	1 Quarter
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-94.00K	USD	3 Qtrs
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-5.61M	USD	3 Qtrs
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-160.00K	USD	1 Quarter
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$3.00K	USD	1 Quarter
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-1.30M	USD	3 Qtrs
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$1.71M	USD	1 Quarter
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-12.48M	USD	1 Quarter
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-13.32M	USD	3 Qtrs
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	-	USD	1 Quarter
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$19.73M	USD	3 Qtrs
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	-	USD	1 Quarter
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	-	USD	3 Qtrs
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$898.00K	USD	3 Qtrs
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-328.00K	USD	1 Quarter
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$16.00K	USD	3 Qtrs
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$969.00K	USD	1 Quarter
Other, net	`OtherNonoperatingIncomeExpense`	$54.95M	USD	3 Qtrs
Other, net	`OtherNonoperatingIncomeExpense`	$64.00K	USD	1 Quarter
Other, net	`OtherNonoperatingIncomeExpense`	$357.00K	USD	1 Quarter
Other, net	`OtherNonoperatingIncomeExpense`	$68.00K	USD	3 Qtrs
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-18.20M	USD	1 Quarter
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-4.30M	USD	1 Quarter
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-17.17M	USD	3 Qtrs
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$29.04M	USD	3 Qtrs
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-3.11M	USD	1 Quarter
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$10.33M	USD	3 Qtrs
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$29.74M	USD	1 Quarter
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$89.79M	USD	3 Qtrs
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$3.36M	USD	1 Quarter
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$12.93M	USD	3 Qtrs
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$-12.56M	USD	3 Qtrs
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$-12.79M	USD	1 Quarter
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossfromContinuingOperationsbeforeEquityMethodInvestmentsNoncontrollingInterest`	$76.85M	USD	3 Qtrs
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossfromContinuingOperationsbeforeEquityMethodInvestmentsNoncontrollingInterest`	$26.38M	USD	1 Quarter
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossfromContinuingOperationsbeforeEquityMethodInvestmentsNoncontrollingInterest`	$9.69M	USD	1 Quarter
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossfromContinuingOperationsbeforeEquityMethodInvestmentsNoncontrollingInterest`	$22.90M	USD	3 Qtrs
Equity in Earnings of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$1.92M	USD	3 Qtrs
Equity in Earnings of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$488.00K	USD	1 Quarter
Equity in Earnings of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$2.93M	USD	3 Qtrs
Equity in Earnings of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$821.00K	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$25.82M	USD	3 Qtrs
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$78.77M	USD	3 Qtrs
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$27.20M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$10.18M	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-23.15M	USD	3 Qtrs
Income (Loss) from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$10.93M	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	3 Qtrs
Net Income	`ProfitLoss`	$21.10M	USD	1 Quarter
Net Income	`ProfitLoss`	$2.67M	USD	3 Qtrs
Net Income	`ProfitLoss`	$27.20M	USD	1 Quarter
Net Income	`ProfitLoss`	$78.77M	USD	3 Qtrs
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$10.14M	USD	1 Quarter
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$15.93M	USD	3 Qtrs
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.54M	USD	1 Quarter
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$13.84M	USD	3 Qtrs
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$62.83M	USD	3 Qtrs
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.56M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-11.16M	USD	3 Qtrs
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.07M	USD	1 Quarter
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.38	USD	1 Quarter
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.55	USD	3 Qtrs
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.94	USD	1 Quarter
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$3.48	USD	3 Qtrs
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$0.62	USD	1 Quarter
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-1.20	USD	3 Qtrs
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	3 Qtrs
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$1.00	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$-0.65	USD	3 Qtrs
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$0.94	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$3.48	USD	3 Qtrs
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$3.21	USD	3 Qtrs
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.55	USD	3 Qtrs
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.38	USD	1 Quarter
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.88	USD	1 Quarter
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	3 Qtrs
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$0.62	USD	1 Quarter
Discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-1.19	USD	3 Qtrs
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$3.21	USD	3 Qtrs
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$-0.64	USD	3 Qtrs
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$0.88	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	18.05M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	17.51M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	18.11M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	17.27M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	21.19M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	22.51M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	17.64M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	17.51M	shares	3 Qtrs

Cash Flow Statement 65 line items

Line Item	Tag	Value	Unit	Period
Net Cash Provided by Operating Activities of Continuing Operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$35.80M	USD	3 Qtrs
Net Cash Provided by Operating Activities of Continuing Operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$85.09M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$43.74M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$99.31M	USD	3 Qtrs
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$15.95M	USD	3 Qtrs
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$27.61M	USD	3 Qtrs
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$7.64M	USD	3 Qtrs
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$9.84M	USD	3 Qtrs
Return of investments and advances from 50% or less owned companies	`ProceedsfromEquityMethodInvestmentDistributionReturnofCapitalandRepaymentsofAdvances`	$9.68M	USD	3 Qtrs
Return of investments and advances from 50% or less owned companies	`ProceedsfromEquityMethodInvestmentDistributionReturnofCapitalandRepaymentsofAdvances`	$8.18M	USD	3 Qtrs
Proceeds from the sale of 50% or less owned companies	`ProceedsFromSaleOfEquityMethodInvestments`	$5.00M	USD	3 Qtrs
Proceeds from the sale of 50% or less owned companies	`ProceedsFromSaleOfEquityMethodInvestments`	$78.02M	USD	3 Qtrs
Payments received on third-party leases and notes receivable, net	`PaymentsForProceedsFromLoansAndLeases`	$-24.35M	USD	3 Qtrs
Payments received on third-party leases and notes receivable, net	`PaymentsForProceedsFromLoansAndLeases`	$-452.00K	USD	3 Qtrs
Withdrawals from construction reserve funds	`DecreaseinRestrictedCashandCashEquivalentsNoncurrent`	$45.43M	USD	3 Qtrs
Withdrawals from construction reserve funds	`DecreaseinRestrictedCashandCashEquivalentsNoncurrent`	$37.71M	USD	3 Qtrs
Deposits into construction reserve funds	`IncreaseinRestrictedCashandCashEquivalentsNoncurrent`	-	USD	3 Qtrs
Deposits into construction reserve funds	`IncreaseinRestrictedCashandCashEquivalentsNoncurrent`	$13.81M	USD	3 Qtrs
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-5.25M	USD	3 Qtrs
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-310.00K	USD	3 Qtrs
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-11.15M	USD	3 Qtrs
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$94.76M	USD	3 Qtrs
Payments on long-term debt and capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$43.97M	USD	3 Qtrs
Payments on long-term debt and capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$133.15M	USD	3 Qtrs
Proceeds from issuance of long-term debt, net of issue costs	`ProceedsFromIssuanceOfLongTermDebt`	$-2.50M	USD	3 Qtrs
Proceeds from issuance of long-term debt, net of issue costs	`ProceedsFromIssuanceOfLongTermDebt`	$38.90M	USD	3 Qtrs
Purchase of conversion option in convertible debt	`PaymentsForConversionOptionInConvertibleDebt`	$5.00K	USD	3 Qtrs
Purchase of conversion option in convertible debt	`PaymentsForConversionOptionInConvertibleDebt`	$1.35M	USD	3 Qtrs
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	-	USD	3 Qtrs
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$7.57M	USD	3 Qtrs
Proceeds from share award plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$16.43M	USD	3 Qtrs
Proceeds from share award plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$6.28M	USD	3 Qtrs
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	-	USD	3 Qtrs
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$5.11M	USD	3 Qtrs
Net cash used in financing activities of continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-45.30M	USD	3 Qtrs
Net cash used in financing activities of continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-86.75M	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$61.00K	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$856.00K	USD	3 Qtrs
Net Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-11.95M	USD	3 Qtrs
Net Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$85.33M	USD	3 Qtrs
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$26.88M	USD	3 Qtrs
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$2.72M	USD	3 Qtrs
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$-7.15M	USD	3 Qtrs
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$208.00K	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	-	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$22.65M	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	-	USD	3 Qtrs
Net Increase in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$10.71M	USD	3 Qtrs
Net Increase in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$85.33M	USD	3 Qtrs
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$258.89M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$327.55M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$242.23M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$269.59M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$258.89M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$327.55M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$242.23M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$269.59M	USD	Point-in-time
Restricted Cash and Restricted Cash Equivalents, End of Period	`RestrictedCashAndCashEquivalents`	$2.44M	USD	Point-in-time
Restricted Cash and Restricted Cash Equivalents, End of Period	`RestrictedCashAndCashEquivalents`	$2.99M	USD	Point-in-time
Cash and Cash Equivalents, End of Period	`CashAndCashEquivalentsAtCarryingValue`	$239.25M	USD	Point-in-time
Cash and Cash Equivalents, End of Period	`CashAndCashEquivalentsAtCarryingValue`	$267.16M	USD	Point-in-time
Cash and Cash Equivalents, End of Period	`CashAndCashEquivalentsAtCarryingValue`	$324.56M	USD	Point-in-time

Stockholders Equity 23 line items

Line Item	Tag	Value	Unit	Period
December 31, 2017	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$846.69M	USD	Point-in-time
December 31, 2017	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time
Impact of adoption of accounting principle	`CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption`	$-2.47M	USD	Point-in-time
December 31, 2017, As Adjusted	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1`	$750.89M	USD	Point-in-time
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.53M	USD	3 Qtrs
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$4.75M	USD	3 Qtrs
Director stock awards	`StockIssuedDuringPeriodValueIssuedForServices`	$106.00K	USD	3 Qtrs
Restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	3 Qtrs
Net issuance of conversion option on exchange of convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt`	$12.73M	USD	3 Qtrs
Purchase of conversion option in convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments`	$5.00K	USD	3 Qtrs
Amortization of share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$2.83M	USD	3 Qtrs
Acquisition of a subsidiary with noncontrolling interests	`NoncontrollingInterestIncreaseFromBusinessCombination`	$96.00K	USD	3 Qtrs
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$5.11M	USD	3 Qtrs
Net income	`ProfitLoss`	$21.10M	USD	1 Quarter
Net income	`ProfitLoss`	$2.67M	USD	3 Qtrs
Net income	`ProfitLoss`	$27.20M	USD	1 Quarter
Net income	`ProfitLoss`	$78.77M	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.28M	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$101.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$279.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$-59.00K	USD	1 Quarter
September 30, 2018	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$846.69M	USD	Point-in-time
September 30, 2018	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time

Comprehensive Income 44 line items

Line Item	Tag	Value	Unit	Period
Net Income	`ProfitLoss`	$21.10M	USD	1 Quarter
Net Income	`ProfitLoss`	$2.67M	USD	3 Qtrs
Net Income	`ProfitLoss`	$27.20M	USD	1 Quarter
Net Income	`ProfitLoss`	$78.77M	USD	3 Qtrs
Foreign currency translation gains (losses)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-76.00K	USD	1 Quarter
Foreign currency translation gains (losses)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$2.15M	USD	3 Qtrs
Foreign currency translation gains (losses)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$59.00K	USD	3 Qtrs
Foreign currency translation gains (losses)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$425.00K	USD	1 Quarter
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	$-15.00K	USD	1 Quarter
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	-	USD	1 Quarter
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	$-15.00K	USD	3 Qtrs
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	-	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-389.00K	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	1 Quarter
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	1 Quarter
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	-	USD	1 Quarter
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	$-5.00K	USD	1 Quarter
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	-	USD	3 Qtrs
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	$11.00K	USD	3 Qtrs
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$1.89M	USD	3 Qtrs
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$430.00K	USD	1 Quarter
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$74.00K	USD	3 Qtrs
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$-61.00K	USD	1 Quarter
Income tax benefit (expense)	`OtherComprehensiveIncomeLossTax`	$-27.00K	USD	3 Qtrs
Income tax benefit (expense)	`OtherComprehensiveIncomeLossTax`	$-2.00K	USD	1 Quarter
Income tax benefit (expense)	`OtherComprehensiveIncomeLossTax`	$151.00K	USD	1 Quarter
Income tax benefit (expense)	`OtherComprehensiveIncomeLossTax`	$605.00K	USD	3 Qtrs
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.28M	USD	3 Qtrs
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$101.00K	USD	3 Qtrs
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$279.00K	USD	1 Quarter
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-59.00K	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$27.14M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$3.96M	USD	3 Qtrs
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$78.87M	USD	3 Qtrs
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$21.38M	USD	1 Quarter
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$14.00M	USD	3 Qtrs
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$10.14M	USD	1 Quarter
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$3.54M	USD	1 Quarter
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$15.93M	USD	3 Qtrs
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$17.01M	USD	1 Quarter
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-10.04M	USD	3 Qtrs
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$17.84M	USD	1 Quarter
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$62.94M	USD	3 Qtrs

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