Seacor (CKH) 10-Q 25 Apr 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 22, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'SEACOR HOLDINGS INC /NEW/	'
Entity Central Index Key	'0000859598	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	20,620,644
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and cash equivalents	$374,790	$527,435
Restricted cash	14,490	12,175
Marketable securities	29,522	24,292
Receivables:	'	'
Trade, net of allowance for doubtful accounts	203,785	215,768
Other Receivables	41,292	48,181
Inventories	24,962	27,615
Deferred income taxes	116	116
Prepaid expenses and other	8,292	6,701
Total current assets	697,249	862,283
Property and Equipment:	'	'
Property, Plant and Equipment, Gross	2,224,212	2,199,183
Accumulated depreciation	894,511	866,330
Property, Plant and Equipment, Net In Service	1,329,701	1,332,853
Construction in Progress, Gross	325,529	143,482
Net property and equipment	1,655,230	1,476,335
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	456,446	440,853
Construction Reserve Funds & Title XI Reserve Funds	264,339	261,739
Goodwill	17,963	17,985
Intangible Assets, Net	11,567	12,423
Other Assets	42,241	44,615
Total assets	3,145,035	3,116,233
Current Liabilities:	'	'
Current portion of long-term debt	49,171	45,323
Accounts payable and accrued expenses	83,296	85,477
Other current liabilities	132,190	123,619
Total current liabilities	264,657	254,419
Long-Term Debt	830,887	834,118
Deferred Income Taxes	456,883	457,827
Deferred Gains and Other Liabilities	145,483	144,441
Total liabilities	1,697,910	1,690,805
SEACOR Holdings Inc. stockholders’ equity:	'	'
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	0	0
Common stock, $.01 par value, 60,000,000 shares authorized; 37,418,455 and 37,219,201 shares issued in 2012 and 2011, respectively	374	372
Additional paid-in capital	1,401,294	1,394,621
Retained earnings	1,106,779	1,095,270
Treasury Stock, Value	-1,087,101	-1,088,219
Accumulated Other Comprehensive Income (Loss), Net of Tax	-929	-1,192
Stockholders' equity attributable to parent, total	1,420,417	1,400,852
Noncontrolling interests in subsidiaries	26,708	24,576
Total equity	1,447,125	1,425,428
Liabilities and stockholders' equity, total	$3,145,035	$3,116,233

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Trade receivables, allowance for doubtful accounts	$2,057	$1,162
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	37,418,455	37,219,201
Treasury stock, shares	16,821,393	16,837,113
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Income (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Document Period End Date	31-Mar-14	'
Operating Revenues	$310,017	$267,064
Costs and Expenses [Abstract]	'	'
Operating	218,976	200,913
Administrative and general	38,077	35,645
Depreciation and amortization	33,392	33,548
Total costs and expenses	290,445	270,106
Gain (Loss) on Sale of Assets and Asset Impairment Charges	4,678	2,015
Operating Income (Loss)	24,250	-1,027
Other Income (Expense):	'	'
Interest income	4,043	3,167
Interest expense	11,403	12,840
Marketable security gains, net	5,070	3,995
Derivative losses, net	-237	-2,107
Foreign currency losses, net	-199	-4,011
Other, net	-3,655	3
Total Other Nonoperating Income (Expense)	-6,381	-11,793
Income from Continuing Operations Before Income Tax Expense and Equity in Earnings of 50% or Less Owned Companies	17,869	-12,820
Income Tax Expense (Benefit)	6,375	-2,653
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	11,494	-10,167
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,221	-869
Income from Continuing Operations	13,715	-11,036
Income (Loss) from Discontinued Operations, Net of Tax	0	-10,325
Net Income (Loss)	13,715	-21,361
Net Income (Loss) Attributable to Noncontrolling Interest	2,206	-373
Net Income (Loss) attributable to SEACOR Holdings Inc.	11,509	-20,988
Net Income (Loss) attributable to SEACOR Holdings Inc.:	'	'
Continuing operations	11,509	-10,763
Discontinued operations, net of tax	0	-10,225
Net Income (Loss) attributable to SEACOR Holdings Inc.	$11,509	($20,988)
Basic Earnings Per Common Share of SEACOR Holdings Inc.	'	'
Continuing operations	$0.57	($0.55)
Discontinued operations	$0	($0.51)
Earnings Per Share, Basic	$0.57	($1.06)
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	'	'
Continuing operations	$0.56	($0.55)
Discontinued operations	$0	($0.51)
Earnings Per Share, Diluted	$0.56	($1.06)
Weighted Average Common Shares Outstanding:	'	'
Basic	20,109,373	19,738,930
Weighted Average Number of Shares Outstanding, Diluted	20,546,112	19,738,930

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Document Period End Date	31-Mar-14	'
Net Income (Loss)	$13,715	($21,361)
Other Comprehensive Income (Loss):	'	'
Reclassification of net foreign currency translation losses to foreign currency gains, net	412	-4,198
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	-73	49
Other Comprehensive Income (Loss), before Tax	452	-3,982
Income tax expense	-142	1,227
Other Comprehensive Income (Loss), Net of Tax	310	-2,755
Comprehensive Income (Loss)	14,025	-24,116
Comprehensive Income (Loss) attributable to Noncontrolling Interests in Subsidiaries	2,253	-848
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	11,772	-23,268
Equity Method Investments [Member]	'	'
Other Comprehensive Income (Loss):	'	'
Reclassification of net derivative losses on cash flow hedges to interest expense or equity in earnings of 50% or less owned companies	$113	$167

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement Of Changes In Equity (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	$1,425,428	$1,447,125
Employee Stock Purchase Plan	1,201	'
Exercise of stock options	3,230	'
Director stock awards	52	'
Restricted stock	170	'
Amortization of share awards	3,140	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	0	'
Dividends paid to noncontrolling interests	-121	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	11,509	'
Net Income (Loss) Attributable to Noncontrolling Interest	2,206	'
Net income	13,715	'
Other comprehensive income	310	'
Common Stock [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	372	374
Employee Stock Purchase Plan	0	'
Exercise of stock options	1	'
Director stock awards	0	'
Restricted stock	1	'
Amortization of share awards	0	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	0	'
Dividends paid to noncontrolling interests	0	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	0	'
Other comprehensive income	0	'
Additional Paid-In Capital [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	1,394,621	1,401,294
Employee Stock Purchase Plan	0	'
Exercise of stock options	3,229	'
Director stock awards	52	'
Restricted stock	169	'
Amortization of share awards	-3,140	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	-83	'
Dividends paid to noncontrolling interests	0	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	0	'
Other comprehensive income	0	'
Retained Earnings [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	1,095,270	1,106,779
Employee Stock Purchase Plan	0	'
Exercise of stock options	0	'
Director stock awards	0	'
Restricted stock	0	'
Amortization of share awards	0	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	0	'
Dividends paid to noncontrolling interests	0	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	-11,509	'
Other comprehensive income	0	'
Shares Held In Treasury [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	-1,088,219	-1,087,101
Employee Stock Purchase Plan	1,201	'
Exercise of stock options	0	'
Director stock awards	0	'
Restricted stock	0	'
Amortization of share awards	0	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	83	'
Dividends paid to noncontrolling interests	0	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	0	'
Other comprehensive income	0	'
Accumulated Other Comprehensive Income (Loss) [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	-1,192	-929
Employee Stock Purchase Plan	0	'
Exercise of stock options	0	'
Director stock awards	0	'
Restricted stock	0	'
Amortization of share awards	0	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	0	'
Dividends paid to noncontrolling interests	0	'
Comprehensive income:	'	'
Net Income attributable to SEACOR Holdings Inc.	0	'
Other comprehensive income	-263	'
Non-Controlling Interests In Subsidiaries [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance	24,576	26,708
Employee Stock Purchase Plan	0	'
Exercise of stock options	0	'
Director stock awards	0	'
Restricted stock	0	'
Amortization of share awards	0	'
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	0	'
Dividends paid to noncontrolling interests	-121	'
Comprehensive income:	'	'
Net Income (Loss) Attributable to Noncontrolling Interest	-2,206	'
Other comprehensive income	($47)	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Cash Flows [Abstract]	'	'
Net Cash Provided by Operating Activities of Continuing Operations	$62,231	$56,794
Cash Flows from Investing Activities of Continuing Operations:	'	'
Purchases of property and equipment	219,129	33,855
Proceeds from disposition of property and equipment	17,619	61,369
Investments in and advances to 50% or less owned companies	17,102	22,355
Return of investments and advances from 50% or less owned companies	6,050	510
Principal payments on third party leases and notes receivable, net	-1,293	-3,914
Net (increase) decrease in restricted cash	2,315	-1,156
Net (increase) decrease in construction reserve funds and title XI reserve funds	2,600	-1,152
Net cash used in investing activities of continuing operations	-216,184	11,891
Cash Flows from Financing Activities of Continuing Operations:	'	'
Repayments of Debt and Capital Lease Obligations	2,161	2,665
Net borrowings (repayments) on inventory financing arrangements	1,254	5,519
Proceeds from issuance of long term debt, net of offering costs	3	0
Cash Received (Paid) For Share Settlements from Spinoff Transactions	0	-357
Proceeds and tax benefits from share award plans	4,602	4,658
Cash received from (dividends paid to) noncontrolling interests, net	-121	-1,928
Net cash provided by (used in) financing activities of continuing operations	1,069	-5,811
Effect of Exchange Rate Changes on Cash and Cash Equivalents	239	-2,538
Net Increase (Decrease) in Cash and Cash Equivalents from Continuing Operations	-152,645	60,336
Cash Flows from Discontinued Operations:	'	'
Operating Activities	0	24,298
Investing Activities	0	-5,987
Financing Activities	0	-14,017
Effects of Exchange Rate Changes on Cash and Cash Equivalents	0	143
Net Increase in Cash and Cash Equivalents from Discontinued Operations	0	4,437
Net Increase (Decrease) in Cash and Cash Equivalents	-152,645	64,773
Cash and Cash Equivalents, Beginning of Period	527,435	248,204
Cash and Cash Equivalents, End of Period	$374,790	$312,977

Basis_of_Presentation_and_Acco

Basis of Presentation and Accounting Policy	3 Months Ended
	Mar. 31, 2014
Nature Of Operations And Accounting Policies [Abstract]	'
Basis of Presentation and Accounting Policy	'
	BASIS OF PRESENTATION AND ACCOUNTING POLICY
	The condensed consolidated financial information for the three months ended March 31, 2014 and 2013 has been prepared by the Company and has not been audited by its independent registered public accounting firm. The condensed consolidated financial statements include the accounts of SEACOR Holdings Inc. and its consolidated subsidiaries. In the opinion of management, all adjustments (consisting of normal recurring adjustments) have been made to fairly present the Company’s financial position as of March 31, 2014, its results of operations for the three months ended March 31, 2014 and 2013, its comprehensive income (loss) for the three months ended March 31, 2014 and 2013, its changes in equity for the three months ended March 31, 2014, and its cash flows for the three months ended March 31, 2014 and 2013. Results of operations for the interim periods presented are not necessarily indicative of operating results for the full year or any future periods.
	Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.
	Unless the context otherwise indicates, any reference in this Quarterly Report on Form 10-Q to the “Company” refers to SEACOR Holdings Inc. and its consolidated subsidiaries and any reference in this Quarterly Report on Form 10-Q to “SEACOR” refers to SEACOR Holdings Inc. Capitalized terms used and not specifically defined herein have the same meaning as such defined terms used in the Company's Annual report on Form 10-K for the year ended December 31, 2013.
	Discontinued Operations (see Note 14). The Company reports disposed businesses as discontinued operations when it has no continuing interest in the business. Discontinued operations includes the historical financial position, results of operations and cash flows of the operations previously reported as discontinued in the Company's Annual Report on Form 10-K for the year ended December 31, 2013.
	Revenue Recognition. The Company recognizes revenue when it is realized or realizable and earned. Revenue is realized or realizable and earned when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the buyer is fixed or determinable, and collectability is reasonably assured. Revenue that does not meet these criteria is deferred until the criteria are met.
	As of March 31, 2014 and 2013, the Company had deferred revenues of $6.6 million, included in other current liabilities, related to the time charter of several offshore support vessels scheduled to be paid through the conveyance of an overriding royalty interest (the "Conveyance") in developmental oil and gas producing properties operated by a customer in the U.S. Gulf of Mexico. Payments under the Conveyance, and the timing of such payments, were contingent upon production and energy sale prices. On August 17, 2012, the customer filed a voluntary petition for Chapter 11 bankruptcy. The Company is vigorously defending its interest in connection with the bankruptcy filing; however, payments received under the Conveyance subsequent to August 17, 2012 are subject to bankruptcy court approval. The Company will recognize revenues as approved by the bankruptcy court. All costs and expenses related to these charters were recognized as incurred.
	Accumulated Other Comprehensive Income (Loss). The components of accumulated other comprehensive income (loss) were as follows:
		SEACOR Holdings Inc. Stockholders' Equity												Noncontrolling
														Interests
		Foreign			Derivative			Other			Total			Foreign		Other			Other
		Currency			Losses on									Currency					Comprehensive
		Translation			Cash Flow									Translation					Income
		Adjustments			Hedges, net									Adjustments
	31-Dec-13	$	(927	)	$	(257	)	$	(8	)	$	(1,192	)	$	395	$	(5	)
	Other comprehensive income	365			40			—			405			47		—			$	452
	Income tax expense	(128		)	(14		)	—			(142		)	—		—			(142		)
	Three months ended March 31, 2014	$	(690	)	$	(231	)	$	(8	)	$	(929	)	$	442	$	(5	)	$	310
	Reclassifications. Certain reclassifications of prior period information have been made to conform to the presentation of the current period information. These reclassifications had no effect on net income as previously reported.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	FAIR VALUE MEASUREMENTS
	The fair value of an asset or liability is the price that would be received to sell an asset or transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value and defines three levels of inputs that may be used to measure fair value. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, or inputs derived from observable market data. Level 3 inputs are unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities.
	The Company’s financial assets and liabilities as of March 31, 2014 that are measured at fair value on a recurring basis were as follows (in thousands):
		Level 1			Level 2			Level 3
	ASSETS
	Marketable securities(1)	$	29,522		$	—		$	—
	Derivative instruments (included in other receivables)	3,945			4,396			—
	Construction reserve funds and Title XI reserve funds	264,339			—			—
	LIABILITIES
	Short sale of marketable securities (included in other current liabilities)	10,223			—			—
	Derivative instruments (included in other current liabilities)	1,490			1,808			—
	______________________
	-1	Marketable security gains, net include unrealized gains of $4.9 million and $4.0 million for the three months ended March 31, 2014 and 2013, respectively, related to marketable security positions held by the Company as of March 31, 2014.
	The estimated fair values of the Company’s other financial assets and liabilities as of March 31, 2014 were as follows (in thousands):
					Estimated Fair Value
		Carrying			Level 1			Level 2			Level 3
		Amount
	ASSETS
	Cash, cash equivalents and restricted cash	$	389,280		$	389,280		$	—		$	—
	Investments, at cost, in 50% or less owned companies (included in other	9,331			see below
	assets)
	Notes receivable from third parties (included in other receivables and other assets)	12,931			see below
	LIABILITIES
	Long-term debt, including current portion(1)	880,058			—			1,081,997			—
	______________________
	-1	The estimated fair value includes the conversion options on the Company's 2.5% and 3.0% Convertible Senior Notes.
	The carrying value of cash, cash equivalents and restricted cash approximates fair value. The fair value of the Company’s long-term debt was estimated based upon quoted market prices or by using discounted cash flow analyses based on estimated current rates for similar types of arrangements. It was not practicable to estimate the fair value of the Company’s investments, at cost, in 50% or less owned companies because of the lack of quoted market prices and the inability to estimate fair value without incurring excessive costs. It was not practicable to estimate the fair value of the Company’s notes receivable from third parties as the overall returns are uncertain due to certain provisions for additional payments contingent upon future events. Considerable judgment was required in developing certain of the estimates of fair value and, accordingly, the estimates presented herein are not necessarily indicative of the amounts that the Company could realize in a current market exchange.
	The Company’s non-financial assets and liabilities that were measured at fair value during the three months ended March 31, 2014 were as follows (in thousands):
			Level 1			Level 2			Level 3
	ASSETS
	Long-lived assets held for sale(1)		$	—		$	11,700		$	—
	______________________
	-1	During the three months ended March 31, 2014, the Company recognized impairment charges of $3.9 million related to two aircraft following the adjustment of their carrying value to fair value based on the expected sales price of each.

Derivative_Instruments_And_Hed

Derivative Instruments And Hedging Strategies	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments And Hedging Strategies	'
	DERIVATIVE INSTRUMENTS AND HEDGING STRATEGIES
	Derivative instruments are classified as either assets or liabilities based on their individual fair values. Derivative assets and liabilities are included in other receivables and other current liabilities, respectively, in the accompanying condensed consolidated balance sheets. The fair values of the Company’s derivative instruments as of March 31, 2014 were as follows (in thousands):
		Derivative			Derivative
		Asset			Liability
	Options on equities and equity indices	$	236		$	—
	Forward currency exchange, option and future contracts	255			75
	Interest rate swap agreements	—			1,307
	Commodity swap, option and future contracts:
	Exchange traded	3,945			1,473
	Non-exchange traded	3,905			443
		$	8,341		$	3,298
	Cash Flow Hedges. As of March 31, 2014, the Company had no interest rate swap agreements designated as cash flow hedges. As of March 31, 2014, one of the Company’s Offshore Marine Services 50% or less owned companies had an interest rate swap agreement maturing in 2015 that has been designated as a cash flow hedge. This instrument calls for this company to pay a fixed interest rate of 1.48% on the amortized notional value of $16.4 million and receive a variable interest rate based on LIBOR on the amortized notional value. As of March 31, 2014, one of the Company’s Inland River Services 50% or less owned companies had three interest rate swap agreements with maturities ranging from 2014 through 2015 that have been designated as cash flow hedges. These instruments call for this company to pay fixed rates of interest ranging from 1.53% to 4.16% on the aggregate amortized notional value of $26.7 million and receive a variable interest rate based on LIBOR on the aggregate amortized notional value. Additionally, as of March 31, 2014, one of the Company’s Shipping Services 50% or less owned companies had an interest rate swap agreement maturing in 2017 that has been designated as a cash flow hedge. The instrument calls for this company to pay a fixed interest rate of 2.79% on the amortized notional value of $36.7 million and received a variable interest rate based on LIBOR on the amortized notional value. By entering into these interest rate swap agreements, the Company's 50% or less owned companies have converted the variable LIBOR component of certain of their outstanding borrowings to a fixed interest rate.
	Other Derivative Instruments. The Company recognized gains (losses) on derivative instruments not designated as hedging instruments for the three months ended March 31 as follows (in thousands):
		2014			2013
	Options on equities and equity indices	$	13		$	(2,284	)
	Forward currency exchange, option and future contracts	11			(598		)
	Interest rate swap agreements	(65		)	89
	Commodity swap, option and future contracts:
	Exchange traded	1,841			(744		)
	Non-exchange traded	(2,037		)	1,430
		$	(237	)	$	(2,107	)
	The Company holds positions in publicly traded equity options that convey the right or obligation to engage in a future transaction on the underlying equity security or index. The Company’s investment in equity options primarily includes positions in energy, marine, transportation and other related businesses. These contracts are typically entered into to mitigate the risk of changes in the market value of marketable security positions that the Company is either about to acquire, has acquired or is about to dispose of.
	The Company enters and settles forward currency exchange, option and future contracts with respect to various foreign currencies. As of March 31, 2014, the outstanding forward currency exchange contracts translated into a net purchase of foreign currencies with an aggregate U.S. dollar equivalent of $17.7 million. These contracts enable the Company to buy currencies in the future at fixed exchange rates, which could offset possible consequences of changes in currency exchange rates with respect to the Company’s business conducted outside of the United States. The Company generally does not enter into contracts with forward settlement dates beyond twelve to eighteen months.
	The Company has entered into various interest rate swap agreements with maturities ranging from 2014 through 2018 that call for the Company to pay fixed interest rates ranging from 3.00% to 3.05% on an aggregate amortized notional value of $36.1 million and receive a variable interest rate based on LIBOR or Euribor on these aggregate amortized notional values. As of March 31, 2014, one of the Company’s Offshore Marine Services 50% or less owned companies has entered into an interest rate swap agreement maturing in 2018 that calls for this company to pay a fixed interest rate of 1.30% on the amortized notional value of $100.7 million and receive a variable interest rate based on LIBOR on the amortized notional value. Additionally, another one of the Company's Offshore Marine Services 50% or less owned companies has entered into two interest rate swap agreements maturing in 2020 that calls for this company to pay fixed interest rates ranging from 1.89% to 2.27% on the aggregate amortized notional value of $26.1 million and receive a variable interest rate based on LIBOR on the amortized notional value. As of March 31, 2014, one of the Company's Shipping Services 50% or less owned companies entered into six interest rate swap agreements with maturities ranging from 2018 to 2020 that call for this company to pay fixed rates of interest ranging from 2.96% to 5.40% on the aggregate amortized notional value of $127.3 million and receive a variable interest rate based on LIBOR on the aggregate amortized notional value. The general purpose of these interest rate swap agreements is to provide protection against increases in interest rates, which might lead to higher interest costs for the Company or its 50% or less owned companies.
	The Company enters and settles positions in various exchange and non-exchange traded commodity swap, option and future contracts. ICP enters into exchange traded positions (primarily corn) to protect its raw material and finished goods inventory balance from market changes. In the Company’s agricultural business, fixed price future purchase and sale contracts for sugar are included in the Company’s non-exchange traded derivative positions. The Company enters into exchange traded positions to protect these purchase and sale contracts as well as its inventory balances from market changes. As of March 31, 2014, the net market exposure to corn and sugar under these contracts was not material. The Company also enters into exchange traded positions (primarily natural gas, heating oil, crude oil, gasoline, corn and sugar) to provide value to the Company should there be a sustained decline in the price of commodities that could lead to a reduction in the market values and cash flows of the Company’s Offshore Marine Services, Inland River Services and Shipping Services businesses. As of March 31, 2014, none of these types of positions were outstanding.

Business_Acquisitions

Business Acquisitions	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Business Acquisitions	'
	BUSINESS ACQUISITIONS
	C-Lift Acquisition. On June 6, 2013, the Company acquired a controlling interest in C-Lift through the acquisition of its partner's 50% interest for $13.3 million in cash. C-Lift owns and operates two liftboats in the U.S. Gulf of Mexico. The Company performed a fair value analysis and the purchase price was allocated to the acquired assets and liabilities based on their fair values resulting in no goodwill being recorded. The preliminary fair value analysis was finalized in March 2014.

Equipment_Acquisitions_Disposi

Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies	3 Months Ended
	Mar. 31, 2014
Equipment Acquisitions, Dispositions And Depreciation And Impairment Policies [Abstract]	'
Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies	'
	EQUIPMENT ACQUISITIONS, DISPOSITIONS AND DEPRECIATION AND IMPAIRMENT POLICIES
	During the three months ended March 31, 2014, capital expenditures were $219.1 million including $145.6 million of progress payments toward the construction of U.S.-flag product tankers. Equipment deliveries during the period included one crew boat, one wind farm utility vessel and 28 inland river dry cargo barges.
	During the three months ended March 31, 2014, the Company sold four crew boats, one wind farm utility vessel and other property and equipment for net proceeds of $10.8 million and gains of $7.8 million, all of which were recognized currently. In addition, the Company recognized previously deferred gains of $0.8 million. The Company also received deposits of $6.8 million related to future offshore support vessel sales.
	The Company has sold certain equipment to its 50% or less owned companies, entered into vessel sale-leaseback transactions with finance companies, and provided seller financing on sales of its equipment to third parties and its 50% or less owned companies. A portion of the gains realized from these transactions were deferred and recorded in deferred gains and other liabilities in the accompanying condensed consolidated balance sheets. Deferred gain activity related to these transactions for the three months ended March 31 was as follows (in thousands):
		2014			2013
	Balance at beginning of period	$	124,763		$	111,514
	Amortization of deferred gains included in operating expenses as a reduction to rental expense	(3,314		)	(2,801		)
	Amortization of deferred gains included in gains on asset dispositions and impairments, net	(976		)	(716		)
	Balance at end of period	$	120,473		$	107,997
	Equipment, stated at cost, is depreciated using the straight-line method over the estimated useful life of the asset to an estimated salvage value. With respect to each class of asset, the estimated useful life is based upon a newly built asset being placed into service and represents the point at which it is typically not justifiable for the Company to continue to operate the asset in the same or similar manner. From time to time, the Company may acquire older assets that have already exceeded the Company’s useful life policy, in which case the Company depreciates such assets based on its best estimate of remaining useful life, typically the next survey or certification date.
	As of March 31, 2014, the estimated useful life (in years) of each of the Company’s major categories of new equipment was as follows:
	Offshore support vessels (excluding wind farm utility)	20
	Wind farm utility vessels	10
	Inland river dry-cargo and deck barges	20
	Inland river liquid tank barges	25
	Inland river towboats	25
	U.S.-flag product tankers	25
	RORO(1) vessels	20
	Harbor tugs	25
	Ocean liquid tank barges	25
	Terminal and manufacturing facilities	20
	______________________
	-1	Roll on/Roll off ("RORO").
	The Company performs an impairment analysis of long-lived assets used in operations, including intangible assets, when indicators of impairment are present. If the carrying value of the assets is not recoverable, as determined by the estimated undiscounted cash flows, the carrying value of the assets is reduced to fair value. Generally, fair value is determined using valuation techniques, such as expected discounted cash flows or appraisals, as appropriate. During the three months ended March 31, 2014, the Company recognized impairment charges of $3.9 million related to two aircraft.

Investments_At_Equity_And_Adva

Investments, At Equity, And Advances To 50% Or Less Owned Companies	3 Months Ended
	Mar. 31, 2014
Equity Method Investment, Summarized Financial Information [Abstract]	'
Investments, At Equity, And Advances To 50% Or Less Owned Companies	'
	INVESTMENTS, AT EQUITY, AND ADVANCES TO 50% OR LESS OWNED COMPANIES
	SCFCo Holdings. SCFCo Holdings was established to operate towboats and dry cargo barges on the Parana-Paraguay Rivers and a terminal facility at Port Ibicuy, Argentina. During the three months ended March 31, 2014, the Company and its partner each contributed additional capital of $11.5 million. As of March 31, 2014, the Company had outstanding loans to SCFCo Holdings of $3.6 million.
	SeaJon. SeaJon owns an articulated tug-barge operating in the Great Lakes trade. During the three months ended March 31, 2014, the Company and its partner each contributed additional capital of $0.2 million to fund certain capital acquisitions.
	Avion. Avion is a distributor of aircraft and aircraft related parts. During the three months ended March 31, 2014, Avion repaid $4.0 million of outstanding notes to the Company.
	Cleancor. On August 20, 2013, CLEANCOR Energy Solutions LLC ("Cleancor") was established to be a full service solution provider delivering clean fuel to end users. During the three months ended March 31, 2014, the Company contributed capital of $4.8 million to Cleancor to fund its start-up operations and provide capital for future investments.
	Other. During the three months ended March 31, 2014, the Company received a capital distribution of $2.1 million from one of Inland River Services 50% or less owned companies, loaned $0.3 million to one of its Offshore Marine Services 50% or less owned companies and loaned $0.2 million to one of its industrial aviation businesses in Asia.
	Guarantees. The Company has guaranteed the payment of amounts owed by one of its 50% or less owned companies under a vessel charter and has guaranteed amounts owed under banking facilities by certain of its 50% or less owned companies. As of March 31, 2014, the total amount guaranteed by the Company under these arrangements was $15.5 million. In addition, as of March 31, 2014, the Company had uncalled capital commitments to two of its 50% or less owned companies for a total of $2.4 million.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments And Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	As of March 31, 2014, the Company's unfunded capital commitments were $442.5 million and included: $94.8 million for 15 offshore support vessels; $22.8 million for 47 inland river dry cargo barges; $0.9 million for two inland river tank barges; $4.7 million for five inland river towboats; $230.2 million for three U.S.-flag product tankers; $78.7 million for one U.S.-flag articulated tug-barge; and $10.4 million for other equipment and improvements. These commitments are payable as follows: $157.3 million is payable during the remainder of 2014; $275.9 million is payable during 2015-2016; and $9.3 million is payable during 2017.
	On July 20, 2010, two individuals purporting to represent a class commenced a civil action in the Civil District Court for the Parish of Orleans in the State of Louisiana, John Wunstell, Jr. and Kelly Blanchard v. BP, et al., No. 2010-7437 (Division K) (the “Wunstell Action”), in which they assert, among other theories, that Mr. Wunstell suffered injuries as a result of his exposure to certain noxious fumes and chemicals in connection with the provision of remediation, containment and response services by ORM, a subsidiary of the Company prior to the ORM Transaction, during the Deepwater Horizon oil spill response and clean-up in the U.S Gulf of Mexico. The action now is part of the overall multi-district litigation, In re Oil Spill by the Oil Rig "Deepwater Horizon", MDL No. 2179 filed in the U.S. District Court for the Eastern District of Louisiana ("MDL"). The complaint also seeks to establish a “class-wide court-supervised medical monitoring program” for all individuals “participating in BP's Deepwater Horizon Vessels of Opportunity Program and/or Horizon Response Program” who allegedly experienced injuries similar to those of Mr. Wunstell. The Company believes this lawsuit has no merit and will continue to vigorously defend the action and pursuant to contractual agreements with the responsible party, the responsible party has agreed, subject to certain potential limitations, to indemnify and defend ORM in connection with the Wunstell Action and claims asserted in the MDL, discussed further below. Although the Company is unable to estimate the potential exposure, if any, resulting from this matter, the Company does not expect it will have a material effect on the Company's consolidated financial position, results of operations or cash flows.
	On December 15, 2010, ORM and NRC, subsidiaries of the Company prior to the ORM Transaction and SES Business Transaction, respectively, were named as defendants in one of the several consolidated “master complaints” that have been filed in the overall MDL. The master complaint naming ORM and NRC asserts various claims on behalf of a putative class against multiple defendants concerning the clean-up activities generally, and the use of dispersants specifically. By court order, the Wunstell Action has been stayed as a result of the filing of the referenced master complaint. The Company believes that the claims asserted against ORM and NRC in the master complaint have no merit and on February 28, 2011, ORM and NRC moved to dismiss all claims against them in the master complaint on legal grounds. On September 30, 2011, the Court granted in part and denied in part the motion to dismiss that ORM and NRC had filed (an amended decision was issued on October 4, 2011 that corrected several grammatical errors and non-substantive oversights in the original order). Although the Court refused to dismiss the referenced master complaint in its entirety at that time, the Court did recognize the validity of the “derivative immunity” and “implied preemption” arguments that ORM and NRC advanced and directed ORM and NRC to (i) conduct limited discovery to develop evidence to support those arguments and (ii) then re-assert the arguments. The Court did, however, dismiss all state-law claims and certain other claims that had been asserted in the referenced master complaint, and dismissed the claims of all plaintiffs that have failed to allege a legally-sufficient injury. A schedule for limited discovery and motion practice was established by the Court and, in accordance with that schedule, ORM and NRC filed for summary judgment re-asserting their derivative immunity and implied preemption arguments on May 18, 2012. Those motions were argued on July 13, 2012 and are still pending decision. In addition to the indemnity provided to ORM, pursuant to contractual agreements with the responsible party, the responsible party has agreed, subject to certain potential limitations, to indemnify and defend ORM and NRC in connection with these claims in the MDL. Although the Company is unable to estimate the potential exposure, if any, resulting from this matter, the Company does not expect it will have a material effect on the Company's consolidated financial position, results of operations or cash flows.
	Subsequent to the filing of the referenced master complaint, ten additional individual civil actions have been filed in or removed to the U.S. District Court for the Eastern District of Louisiana concerning the clean-up activities generally, which name the Company, ORM and/or NRC as defendants or third-party defendants and are part of the overall MDL. By court order, all of these additional individuals cases have been stayed until further notice. On April 8, 2011, ORM was named as a defendant in Johnson Bros. Corporation of Louisiana v. BP, PLC, et al., No. 2:11-CV-00781 (E.D. La.), which is a suit by an individual business seeking damages allegedly caused by a delay on a construction project alleged to have resulted from the clean-up operations. On April 13, 2011, the Company was named as a defendant in Mason v. Seacor Marine, LLC, No. 2:11-CV-00826 (E.D. La.), an action in which plaintiff, a former employee, alleges sustaining personal injuries in connection with responding to the explosion and fire, but also in the months thereafter in connection with the clean-up of oil and dispersants while a member of the crew of the M/V Seacor Vanguard. Although the case is subject to the MDL Court’s stay of individual proceedings, the employee moved to sever his case from the MDL on July 16, 2012, which the Court denied on March 5, 2013. The employee filed a motion asking the Court to reconsider, which was denied on May 3, 2013, and the employee filed a Notice of Appeal to the U.S. Court of Appeals for the Fifth Circuit (“Fifth Circuit”) on May 22, 2013. On July 24, 2013, the Company filed a motion to dismiss for lack of appellate jurisdiction, which was granted on August 16, 2013. The same company employee has also brought a claim in the M/V Seacor Vanguard vessel’s limitation action in the MDL which relates to any actions that may have been taken by vessels owned by the Company to extinguish the fire. On April 15, 2011, ORM and NRC were named as defendants in James and Krista Pearson v. BP Exploration & Production, Inc. ("BP Exploration"), et al., No. 2:11-CV-00863 (E.D. La.), which is a suit by a husband and wife, who allegedly participated in the clean-up effort and are seeking damages for personal injury, property damage to their boat, and amounts allegedly due under contract. On April 15, 2011, ORM and NRC were named as defendants in Thomas Edward Black v. BP Exploration, et al., No. 2:11-CV-00867 (E.D. La.), which is a suit by an individual who is seeking damages for lost income because he allegedly could not find work in the fishing industry after the oil spill. On April 20, 2011, a complaint was filed in Darnell Alexander, et al. v. BP, PLC, et al., No. 2:11-CV-00951 (E.D. La.) on behalf of 117 individual plaintiffs that seek to adopt the allegations made in the referenced master complaint against ORM and NRC (and the other defendants). Plaintiffs in this matter have since been granted leave to amend their complaint to include 410 additional individual plaintiffs. On October 3, 2012, ORM and NRC were served with a Rule 14(c) Third-Party Complaint by Jambon Supplier II, L.L.C. and Jambon Marine Holdings L.L.C. in their Limitation of Liability action, In the Matter of Jambon Supplier II, L.L.C., et al., No. 2:12-CV-00426 (E.D. La.). This Third-Party Complaint alleges that if claimant David Dinwiddie, who served as a clean-up crewmember aboard the M/V JAMBON SUPPLIER II vessel during the clean-up efforts, was injured as a result of his exposure to dispersants and chemicals during the course and scope of his employment, then said injuries were caused by the third-party defendants. On November 25, 2012, ORM was named as a defendant in Victoria Sanchez v. American Pollution Control Corp. et al., No. 2:12-CV-00164 (E.D. La.), a maritime suit filed by an individual who allegedly participated in the clean-up effort and sustained personal injuries during the course of such employment. On December 17, 2012, the Court unsealed a False Claims Act lawsuit naming ORM as a defendant, Dillon v. BP, PLC et al., No. 2:12-CV-00987 (E.D. La.)., which is a suit by an individual seeking damages and penalties arising from alleged false reports and claims made to the federal government with respect to the amount of oil burned and dispersed during the clean-up. The federal government has declined to intervene in this suit. On April 8, 2013, the Company, ORM, and NRC were named as defendants in William and Dianna Fitzgerald v. BP Exploration et al., No. 2:13-CV-00650 (E.D. La.), which is a suit by a husband and wife whose son allegedly participated in the clean-up effort and became ill as a result of his exposure to oil and dispersants. Finally, on April 17, 2013, ORM was named as a defendant in Danos et al. v. BP America Production Co. et al., No. 2:13-CV-03747 (removed to E.D. La.), which is a suit by eight individuals seeking damages for dispersant exposure either as a result of their work during clean-up operations or as a result of their residence in the Gulf. The Company is unable to estimate the potential exposure, if any, resulting from these matters but believes they are without merit and does not expect that they will have a material effect on its consolidated financial position, results of operations or cash flows.
	On February 18, 2011, Triton Asset Leasing GmbH, Transocean Holdings LLC, Transocean Offshore Deepwater Drilling Inc., and Transocean Deepwater Inc. (collectively “Transocean”) named ORM and NRC as third-party defendants in a Rule 14(c) Third-Party Complaint in Transocean's own Limitation of Liability Act action, which is part of the overall MDL, tendering to ORM and NRC the claims in the referenced master complaint that have already been asserted against ORM and NRC. Transocean, Cameron International Corporation, Halliburton Energy Services, Inc., and M-I L.L.C. also filed cross-claims against ORM and NRC for contribution and tort indemnity should they be found liable for any damages in Transocean's Limitation of Liability Act action and ORM and NRC have asserted counterclaims against those same parties for identical relief. Weatherford U.S., L.P. and Weatherford International, Inc. (collectively "Weatherford") had also filed cross-claims against ORM and NRC, but moved to voluntarily dismiss these cross-claims without prejudice on February 8, 2013. The Court granted Weatherford's motion that same day. Transcoean's limitation action, and thus the remainder of the aforementioned cross-claims, remains pending. As indicated above, the Company is unable to estimate the potential exposure, if any, resulting from these actions but believes they are without merit and does not expect that these matters will have a material effect on its consolidated financial position, results of operations or cash flows.
	On November 16, 2012, 668 individuals who served as beach clean-up workers in Escambia County, Florida during the Deepwater Horizon oil spill response commenced a civil action in the Circuit Court for the First Judicial Circuit of Florida, in and for Escambia County, Abney et al. v. Plant Performance Services, LLC et al., No. 2012-CA-002947, in which they allege, among other things, that ORM and other defendants engaged in the contamination of Florida waters and beaches in violation of Florida Statutes Chapter 376 and injured the plaintiffs by exposing them to dispersants during the course and scope of their employment. The case was removed to the U.S. District Court for the Northern District of Florida on January 13, 2013, Abney et al. v. Plant Performance Services, LLC et al., No. 3:13-CV-00024 (N.D. Fla.), and on January 16, 2013, the United States Judicial Panel on Multidistrict Litigation (“JPML”) issued a Conditional Transfer Order (“CTO”) transferring the case to the MDL, subject to any timely-filed notice of objection from the plaintiffs. Upon receipt of a notice of objection from the plaintiffs, a briefing schedule was set by the JPML, and so a stay of proceedings and suspension of deadlines was sought and obtained by the Court in the U.S. District Court for the Northern District of Florida. Following briefing before the JPML, the case was transferred to the U.S. District Court for the Eastern District of Louisiana and consolidated with the MDL on April 2, 2013. On April 22, 2013, a companion case to this matter was filed in the U.S. District Court for the Northern District of Florida, Abood et al. v. Plant Performance Services, LLC et al., No. 3:13-CV-00284 (N.D. Fla.), which alleges identical allegations against the same parties but names an additional 174 plaintiffs, all of whom served as clean-up workers in various Florida counties during the Deepwater Horizon oil spill response.  A CTO was issued by the JPML on May 2, 2013, no objection was filed by the plaintiffs, and the case was transferred to the U.S. District Court for the Eastern District of Louisiana and consolidated with the MDL on May 10, 2013.  By court order, both of these matters have been stayed until further notice. The Company is unable to estimate the potential exposure, if any, resulting from these matters but believes they are without merit and does not expect that these matters will have a material effect on its consolidated financial position, results of operations or cash flows.
	Separately, on March 2, 2012, the Court announced that BP Exploration and BP America Production Company ("BP America") (collectively "BP") and the plaintiffs had reached an agreement on the terms of two proposed class action settlements that will resolve, among other things, plaintiffs' economic loss claims and clean-up related claims against BP. The parties filed their proposed settlement agreements on April 18, 2012 along with motions seeking preliminary approval of the settlements. The Court held a hearing on April 25, 2012 to consider those motions and preliminarily approved both settlements on May 2, 2012. A final fairness hearing took place on November 8, 2012. The Court granted final approval to the Economic and Property Damages Class Action Settlement ("E&P Settlement") on December 21, 2012, and granted final approval to the Medical Benefits Class Action Settlement ("Medical Settlement") on January 11, 2013. Both class action settlements were appealed to the Fifth Circuit. The Fifth Circuit affirmed the MDL Court's decision concerning the E&P Settlement on January 10, 2014, and also affirmed the MDL Court's decision concerning the interpretation of the E&P Settlement with respect to business economic loss claims on March 3, 2014. The appeal of the Medical Settlement, on the other hand, was voluntarily dismissed and the Medical Settlement became effective on February 12, 2014. The deadline for bringing a claim to the Medical Benefits Claims Administrator is one year from the effective date of the Settlement. Although neither the Company, ORM, or NRC are parties to the settlement agreements, the Company, ORM, and NRC are listed as released parties on the releases accompanying both settlement agreements. Consequently, barring any further successful appeal, class members who did not file timely requests for exclusion will be barred from pursuing economic loss, property damage, personal injury, medical monitoring, and/or other released claims against the Company, ORM, and NRC. The Company believes these settlements have reduced the Company and ORM's potential exposure, if any, from some of the pending actions described above, and continues to evaluate the settlements' impacts on these cases.
	On January 29, 2013, HEPACO, LLC ("HEPACO"), served a demand for arbitration upon ORM, in which HEPACO claims that ORM owes HEPACO an additional fee of $20,291,178.92 under the parties' Management Services Agreement (“MSA”), dated June 1, 2010.  According to HEPACO, the MSA requires ORM to pay HEPACO an additional fee of 30% of total charges paid under the MSA ("Surcharge") to compensate HEPACO for U.S. Longshoremen's and Harbor Workers' insurance or Jones Act insurance and related risks attendant to the work when a contract requires labor to be performed over, adjoining and/or in water. ORM denies liability for the Surcharge, intends to vigorously defend against the claim, and has sought indemnity for any resulting judgment and related attorneys' fees from BP America and BP Exploration. ORM has advised BP that, pursuant to the Bridge Agreement HOU-WL4-3066 between BP and ORM, effective as of June 1, 2010, under which ORM managed and oversaw, for BP, subcontractors, such as HEPACO, in connection with on-shore services related to the BP Deepwater Horizon oil spill, BP ultimately is responsible for the payment of the Surcharge should HEPACO be determined to be entitled to recover it under the MSA. BP as agreed, subject to certain limitations, to indemnify ORM. Arbitration is set to commence on June 2, 2014.
	ORM is defending against two collective action lawsuits, each asserting failure to pay overtime with respect to individuals who provided service on the Deepwater Horizon oil spill response (the “DPH FLSA Actions”) under the Fair Labor Standards Act (“FLSA”).  These cases - Dennis Prejean v. O'Brien's Response Management Inc. (E.D. La., Case No.: 2:12-cv-01045) (the “Prejean Action”) and Himmerite et al. v. O'Brien's Response Management Inc. et al. (E.D. La., Case No.: 2:12-cv-01533) (the “Himmerite Action”) - were each brought on behalf of certain individuals who worked on the Deepwater Horizon oil spill response and who were classified as independent contractors.  The Prejean and Himmerite Actions were each filed in the United States District Court for the Eastern District of Louisiana and then subsequently consolidated with the overall MDL, in which the Himmerite Action was stayed pursuant to procedures of the MDL.  However, both the Prejean and Himmerite Actions were severed from the MDL on September 19, 2013, and referred to a Magistrate Judge for pretrial case management, including issuing a scheduling order, overseeing discovery, and any other preliminary matters.  On October 31, 2013, ORM filed an answer in the Himmerite Action.  In the Himmerite Action, pursuant to an earlier tolling order entered by the Court, the limitations periods for potential plaintiffs to opt-in to the action has been tolled pending further action by the Court.  In the Prejean Action, ORM has answered the complaint and a scheduling order has been issued. On November 6, 2013, the Court conditionally certified a collective class in the Prejean Action.  On December 9, 2013 the Court approved a jointly-submitted form notice and authorized the issuance of notice to all members of the conditionally certified class in the Prejean Action. On December 20, 2013, ORM served plaintiffs’ counsel with a list containing information for approximately 330 potential class members in the Prejean Action. The deadline for plaintiffs to file executed consent forms with the Court has expired. As of February 28, 2014 the Court-ordered deadline for potential class members to opt into the class, 142 individuals have opted in. Although the Court has conditionally certified the Prejean class, the Court has not made a final ruling on whether a class exists. The Company intends to vigorously defend its position that a class should not be certified, and intends on filing a motion to decertify the Prejean class. The Court has also not yet ruled on any of the merits of Plaintiffs’ claims. The Company is unable to estimate the potential exposure, if any, resulting from these DPH FLSA Actions, but believes they are without merit and will continue to vigorously defend against them.
	In a related action, Baylor Singleton et. al. v. O'Brien's Response Management Inc. et. al. (E.D. La., Case No.: 2:12-cv-01716) (the “Singleton Action”), which was also filed in the United States District Court for the Eastern District of Louisiana and in which plaintiffs alleged claims similar to those alleged in the Prejean and Himmerite Actions, the parties reached a full and final settlement agreement on February 13, 2014 with respect to all of the Plaintiff’s individual claims for an undisclosed amount. On April 11, 2014, the Court approved the parties’ settlement and dismissed the Singleton Action with prejudice in its entirety. The Court also ordered that the tolling order which had been entered in the Singleton Action expired as of April 11, 2014.
	In the course of the Company's business, it may agree to indemnify the counterparty to an agreement.  If the indemnified party makes a successful claim for indemnification, the Company would be required to reimburse that party in accordance with the terms of the indemnification agreement.  Indemnification agreements generally are subject to threshold amounts, specified claim periods and other restrictions and limitations.
	In connection with the SES Business Transaction and the ORM Transaction, the Company remains contingently liable for certain obligations, including potential liabilities relating to work performed in connection with the Deepwater Horizon oil spill response. In the case of the SES Business Transaction, such potential liabilities may not exceed the purchase consideration received by the Company for the SES Business Transaction and in the case of the ORM Transaction are subject to a negotiated cap. The Company currently is indemnified under contractual agreements with BP.
	In the normal course of its business, the Company becomes involved in various other litigation matters including, among other things, claims by third parties for alleged property damages and personal injuries. Management has used estimates in determining the Company's potential exposure to these matters and has recorded reserves in its financial statements related thereto where appropriate. It is possible that a change in the Company's estimates of that exposure could occur, but the Company does not expect such changes in estimated costs would have a material effect on the Company's consolidated financial position, results of operations or cash flows.

Multiemployer_Pension_Plans

Multiemployer Pension Plans	3 Months Ended
	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]	'
Multiemployer Pension Plans	'
	MULTI-EMPLOYER PENSION PLANS
	During the three months ended March 31, 2014, the Company received notification from the American Maritime Officers Pension Plan (the "AMOPP”) that the Company's withdrawal liability as of September 30, 2013 was $46.5 million based on an actuarial valuation performed as of that date. That liability may change in future years based on various factors, primarily employee census. As of March 31, 2014, the Company has no intention to withdraw from the AMOPP and no deficit amounts have been invoiced. Depending upon the results of the future actuarial valuations and the ten-year rehabilitation plan, it is possible that the AMOPP will experience further funding deficits, requiring the Company to recognize additional payroll related operating expenses in the periods invoices are received or contribution levels are increased.

LongTerm_Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2014
Long-term Debt and Capital Lease Obligations [Abstract]	'
Long-Term Debt	'
	LONG-TERM DEBT
	As of March 31, 2014, the Company had outstanding letters of credit totaling $26.2 million with various expiration dates through 2015.
	During the three months ended March 31, 2014, the Company made scheduled payments on long-term debt of $2.2 million and made net repayments of $1.3 million under inventory financing arrangements.
	SEACOR’s Board of Directors has previously authorized the Company to purchase any or all of its 7.375% Senior Notes due 2019, which may be acquired through open market purchases, privately negotiated transactions or otherwise, depending on market conditions. During the three months ended March 31, 2014, the Company did not repurchase any of its 7.375% Senior Notes due 2019.

Stock_Repurchases

Stock Repurchases	3 Months Ended
	Mar. 31, 2014
Stock Repurchases [Abstract]	'
Stock Repurchases	'
	STOCK REPURCHASES
	SEACOR’s Board of Directors previously approved a securities repurchase plan that authorizes the Company to acquire shares of SEACOR common stock, par value $0.01 per share (“Common Stock”), which may be acquired through open market purchases, privately negotiated transactions or otherwise, depending on market conditions. During the three months ended March 31, 2014, the Company did not acquire any shares of Common Stock for treasury. As of March 31, 2014, the remaining authority under the repurchase plan was $100.0 million.

Earnings_Per_Common_Share_of_S

Earnings Per Common Share of SEACOR	3 Months Ended
	Mar. 31, 2014
Earnings Per Common Share of SEACOR [Abstract]	'
Earnings Per Common Share of SEACOR	'
	EARNINGS PER COMMON SHARE OF SEACOR
	Basic earnings per common share of SEACOR are computed based on the weighted average number of common shares issued and outstanding during the relevant periods. Diluted earnings per common share of SEACOR are computed based on the weighted average number of common shares issued and outstanding plus the effect of potentially dilutive securities through the application of the treasury stock and if-converted methods. Dilutive securities for this purpose assumes restricted stock grants have vested, common shares have been issued pursuant to the exercise of outstanding stock options and common shares have been issued pursuant to the conversion of all outstanding convertible notes.
	Computations of basic and diluted earnings per common share of SEACOR were as follows (in thousands, except share data):
		Three Months Ended March 31,
		Net Income (Loss) Attributable to SEACOR			Average O/S Shares	Per Share
	2014
	Basic Weighted Average Common Shares Outstanding	$	11,509		20,109,373	$	0.57
	Effect of Dilutive Share Awards:
	Options and Restricted Stock(1)	—			436,739
	Convertible Notes(2)(3)	—			—
	Diluted Weighted Average Common Shares Outstanding	$	11,509		20,546,112	$	0.56
	2013
	Basic Weighted Average Common Shares Outstanding	$	(20,988	)	19,738,930	$	(1.06	)
	Effect of Dilutive Share Awards:
	Options and Restricted Stock(1)	—			—
	Convertible Notes(2)	—			—
	Diluted Weighted Average Common Shares Outstanding	$	(20,988	)	19,738,930	$	(1.06	)
	______________________
	-1	For the three months ended March 31, 2014 and 2013, diluted earnings per common share of SEACOR excluded 212,859 and 1,474,897 of certain share awards, respectively, as the effect of their inclusion in the computation would be anti-dilutive.
	-2	For the three months ended March 31, 2014 and 2013, diluted earnings per common share of SEACOR excluded 4,200,525 common shares issuable pursuant to the Company's 2.5% Convertible Senior Notes as the effect of their inclusion in the computation would be anti-dilutive.
	-3	For the three months ended March 31, 2014, diluted earnings per common share of SEACOR excluded 1,825,326 common shares issuable pursuant to the Company's 3.0% Convertible Senior Notes as the effect of their inclusion in the computation would be anti-dilutive.

Share_Based_Compensation

Share Based Compensation	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share Based Compensation	'
	SHARE BASED COMPENSATION
	Transactions in connection with the Company’s share based compensation plans during the three months ended March 31, 2014 were as follows:
	Director stock awards granted	625
	Employee Stock Purchase Plan (“ESPP”) shares issued	16,720
	Restricted stock awards granted	139,045
	Restricted stock awards canceled	1,000
	Shares released from Deferred Compensation Plan	—
	Stock Option Activities:
	Outstanding as of December 31, 2013	1,481,280
	Granted	45,050
	Exercised	(59,584	)
	Outstanding as of March 31, 2014	1,466,746
	Shares available for future grants and ESPP purchases as of March 31, 2014	308,055

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	SEGMENT INFORMATION
	Accounting standards require public business enterprises to report information about each of their operating business segments that exceed certain quantitative thresholds or meet certain other reporting requirements. Operating business segments have been defined as components of an enterprise about which separate financial information is available and is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company’s segment presentation and basis of measurement of segment profit or loss are as previously described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.
	The following tables summarize the operating results, capital expenditures and assets of the Company's reportable segments.
		Offshore		Inland		Shipping		ICP(1)(2)		Other		Corporate		Total
		Marine		River		Services		$’000		$’000		and		$’000
		Services		Services		$’000						Eliminations
		$’000		$’000								$’000
	For the three months ended
	31-Mar-14
	Operating Revenues:
	External customers	128,957		57,011		52,401		58,656		12,992		—		310,017
	Intersegment	44		948		—		—		—		(992	)	—
		129,001		57,959		52,401		58,656		12,992		(992	)	310,017
	Costs and Expenses:
	Operating	94,043		39,674		26,997		47,274		11,936		(948	)	218,976
	Administrative and general	15,160		4,337		5,896		511		3,111		9,062		38,077
	Depreciation and amortization	16,304		7,370		7,754		990		85		889		33,392
		125,507		51,381		40,647		48,775		15,132		9,003		290,445
	Gains (Losses) on Asset Dispositions	7,738		853		—		—		(409	)	(3,504	)	4,678
	and Impairments, Net
	Operating Income (Loss)	11,232		7,431		11,754		9,881		(2,549	)	(13,499	)	24,250
	Other Income (Expense):
	Derivative gains (losses), net	(61	)	—		—		718		(733	)	(161	)	(237	)
	Foreign currency gains (losses), net	107		(327	)	(10	)	—		9		22		(199	)
	Other, net	—		(38	)	(3,933	)	193		175		(52	)	(3,655	)
	Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,641		(412	)	753		—		(761	)	—		2,221
	Segment Profit (Loss)	13,919		6,654		8,564		10,792		(3,859	)
	Other Income (Expense) not included in Segment Profit (Loss)													(2,290	)
	Less Equity Earnings included in Segment Profit (Loss)													(2,221	)
	Income Before Taxes, Equity Earnings and Discontinued Operations													17,869
	Capital Expenditures	22,019		22,162		157,712		1,379		100		15,757		219,129
	As of March 31, 2014
	Property and Equipment:
	Historical cost	1,154,201		495,360		499,084		44,166		3,750		27,651		2,224,212
	Accumulated depreciation	(483,230	)	(154,706	)	(231,279	)	(12,374	)	(710	)	(12,212	)	(894,511	)
		670,971		340,654		267,805		31,792		3,040		15,439		1,329,701
	Construction in progress	106,872		36,346		164,351		2,118		201		15,641		325,529
		777,843		377,000		432,156		33,910		3,241		31,080		1,655,230
	Investments, at Equity, and Advances to 50% or Less Owned Companies	102,543		64,778		199,997		—		89,128		—		456,446
	Inventories	6,110		2,705		1,298		13,600		1,249		—		24,962
	Goodwill	13,367		2,744		1,852		—		—		—		17,963
	Intangible Assets	3,217		7,306		717		—		327		—		11,567
	Other current and long-term assets, excluding cash and near cash assets(3)	146,796		50,583		19,032		15,049		42,552		21,714		295,726
	Segment Assets	1,049,876		505,116		655,052		62,559		136,497
	Cash and near cash assets(3)													683,141
	Total Assets													3,145,035
	______________________
	-1	Operating revenues includes $57.4 million of tangible product sales and operating expenses includes $45.8 million of costs of goods sold.
	-2	Inventories includes raw materials of $2.2 million and work in process of $1.8 million.
	-3	Cash and near cash assets includes cash, cash equivalents, restricted cash, marketable securities, construction reserve funds and Title XI reserve funds.
		Offshore		Inland		Shipping		ICP(1)(2)		Other		Corporate		Total
		Marine		River		Services		$’000		$’000		and		$’000
		Services		Services		$’000						Eliminations
		$’000		$’000								$’000
	For the three months ended
	31-Mar-13
	Operating Revenues:
	External customers	123,992		49,423		46,476		32,849		14,324		—		267,064
	Intersegment	24		654		—		—		—		(678	)	—
		124,016		50,077		46,476		32,849		14,324		(678	)	267,064
	Costs and Expenses:
	Operating	90,031		36,389		26,614		34,045		14,488		(654	)	200,913
	Administrative and general	14,827		4,024		5,177		661		1,656		9,300		35,645
Depreciation and amortization	16,287		7,084		7,797		1,489		99		792		33,548
	121,145		47,497		39,588		36,195		16,243		9,438		270,106
Gains (Losses) on Asset Dispositions and Impairments, Net	2,339		697		(3,069	)	—		1,907		141		2,015
Operating Income (Loss)	5,210		3,277		3,819		(3,346	)	(12	)	(9,975	)	(1,027	)
Other Income (Expense):
Derivative gains (losses), net	150		—		—		39		842		(3,138	)	(2,107	)
Foreign currency losses, net	(3,264	)	(137	)	(7	)	—		(167	)	(436	)	(4,011	)
Other, net	—		—		14		—		54		(65	)	3
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	1,313		(2,387	)	(1,505	)	—		1,710		—		(869	)
Segment Profit (Loss)	3,409		753		2,321		(3,307	)	2,427
Other Income (Expense) not included in Segment Profit (Loss)													(5,678	)
Less Equity in Losses included in Segment Profit (Loss)													869
Loss Before Taxes, Equity Earnings and Discontinued Operations													(12,820	)
Capital Expenditures	19,920		5,727		6,814		—		357		1,037		33,855
As of March 31, 2013
Property and Equipment:
Historical cost	1,110,480		493,140		506,279		43,788		4,032		29,173		2,186,892
Accumulated depreciation	(428,766	)	(133,827	)	(206,603	)	(7,146	)	(467	)	(8,956	)	(785,765	)
	681,714		359,313		299,676		36,642		3,565		20,217		1,401,127
Construction in progress	61,447		15,335		33,444		—		2,063		1,092		113,381
	743,161		374,648		333,120		36,642		5,628		21,309		1,514,508
Investments, at Equity, and Advances to 50% or Less Owned Companies	85,311		55,105		65,941		—		93,421		—		299,778
Inventories	6,497		2,297		1,284		19,868		2,020		—		31,966
Goodwill	13,367		2,759		1,852		—		—		—		17,978
Intangible Assets	5,105		8,824		1,272		72		481		—		15,754
Other current and long-term assets, excluding cash and near cash assets(3)	136,661		37,787		18,316		5,947		47,877		31,380		277,968
Segment Assets	990,102		481,420		421,785		62,529		149,427
Cash and near cash assets(3)													557,151
Discontinued operations													384
Total Assets													2,715,487
______________________
-1	Operating revenues includes $32.1 million of tangible product sales and operating expenses includes $34.4 million of costs of goods sold.
-2	Inventories includes raw materials of $3.0 million and work in process of $2.4 million.
-3	Cash and near cash assets includes cash, cash equivalents, restricted cash, marketable securities, construction reserve funds and Title XI reserve funds.

Discontinued_Operations_Notes

Discontinued Operations (Notes)	3 Months Ended
	Mar. 31, 2014
Discontinued Operations [Abstract]	'
Disposal Groups, Including Discontinued Operations, Disclosure	'
	DISCONTINUED OPERATIONS
	Summarized selected operating results of the Company's discontinued operations for the three months ended March 31, 2013 were as follows (in thousands):
	SES Business
	Other Expense (final working capital adjustments)	$	(1,537	)
	Income Tax Benefit	538
	Net Loss	$	(999	)
	SEI
	Other Expense (final working capital adjustments)	$	(143	)
	Income Tax Benefit	50
	Net Loss	$	(93	)
	Era Group
	Operating Revenues	$	22,892
	Costs and Expenses:
	Operating	14,076
	Administrative and general	2,653
	Depreciation and amortization	3,875
		20,604
	Gains on Asset Dispositions and Impairments, Net	548
	Operating Income	2,836
	Other Expense, Net	(1,316		)
	Income Tax Expense	(10,818		)
	Equity in Earnings of 50% or Less Owned Companies	65
	Net Loss	$	(9,233	)
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	'
	Summarized selected operating results of the Company's discontinued operations for the three months ended March 31, 2013 were as follows (in thousands):
	SES Business
	Other Expense (final working capital adjustments)	$	(1,537	)
	Income Tax Benefit	538
	Net Loss	$	(999	)
	SEI
	Other Expense (final working capital adjustments)	$	(143	)
	Income Tax Benefit	50
	Net Loss	$	(93	)
	Era Group
	Operating Revenues	$	22,892
	Costs and Expenses:
	Operating	14,076
	Administrative and general	2,653
	Depreciation and amortization	3,875
		20,604
	Gains on Asset Dispositions and Impairments, Net	548
	Operating Income	2,836
	Other Expense, Net	(1,316		)
	Income Tax Expense	(10,818		)
	Equity in Earnings of 50% or Less Owned Companies	65
	Net Loss	$	(9,233	)

Basis_of_Presentation_and_Acco1

Basis of Presentation and Accounting Policy (Policy)	3 Months Ended
	Mar. 31, 2014
Nature Of Operations And Accounting Policies [Abstract]	'
Basis Of Consolidation	'
	The condensed consolidated financial information for the three months ended March 31, 2014 and 2013 has been prepared by the Company and has not been audited by its independent registered public accounting firm. The condensed consolidated financial statements include the accounts of SEACOR Holdings Inc. and its consolidated subsidiaries. In the opinion of management, all adjustments (consisting of normal recurring adjustments) have been made to fairly present the Company’s financial position as of March 31, 2014, its results of operations for the three months ended March 31, 2014 and 2013, its comprehensive income (loss) for the three months ended March 31, 2014 and 2013, its changes in equity for the three months ended March 31, 2014, and its cash flows for the three months ended March 31, 2014 and 2013. Results of operations for the interim periods presented are not necessarily indicative of operating results for the full year or any future periods.
	Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.
	Unless the context otherwise indicates, any reference in this Quarterly Report on Form 10-Q to the “Company” refers to SEACOR Holdings Inc. and its consolidated subsidiaries and any reference in this Quarterly Report on Form 10-Q to “SEACOR” refers to SEACOR Holdings Inc. Capitalized terms used and not specifically defined herein have the same meaning as such defined terms used in the Company's Annual report on Form 10-K for the year ended December 31, 2013.
Discontinued Operations, Policy	'
	Discontinued Operations (see Note 14). The Company reports disposed businesses as discontinued operations when it has no continuing interest in the business. Discontinued operations includes the historical financial position, results of operations and cash flows of the operations previously reported as discontinued in the Company's Annual Report on Form 10-K for the year ended December 31, 2013.
Revenue Recognition	'
	Revenue Recognition. The Company recognizes revenue when it is realized or realizable and earned. Revenue is realized or realizable and earned when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the buyer is fixed or determinable, and collectability is reasonably assured. Revenue that does not meet these criteria is deferred until the criteria are met.
	As of March 31, 2014 and 2013, the Company had deferred revenues of $6.6 million, included in other current liabilities, related to the time charter of several offshore support vessels scheduled to be paid through the conveyance of an overriding royalty interest (the "Conveyance") in developmental oil and gas producing properties operated by a customer in the U.S. Gulf of Mexico. Payments under the Conveyance, and the timing of such payments, were contingent upon production and energy sale prices. On August 17, 2012, the customer filed a voluntary petition for Chapter 11 bankruptcy. The Company is vigorously defending its interest in connection with the bankruptcy filing; however, payments received under the Conveyance subsequent to August 17, 2012 are subject to bankruptcy court approval. The Company will recognize revenues as approved by the bankruptcy court. All costs and expenses related to these charters were recognized as incurred.
Comprehensive Income (Loss) Note	'
	Accumulated Other Comprehensive Income (Loss). The components of accumulated other comprehensive income (loss) were as follows:
		SEACOR Holdings Inc. Stockholders' Equity												Noncontrolling
														Interests
		Foreign			Derivative			Other			Total			Foreign		Other			Other
		Currency			Losses on									Currency					Comprehensive
		Translation			Cash Flow									Translation					Income
		Adjustments			Hedges, net									Adjustments
	31-Dec-13	$	(927	)	$	(257	)	$	(8	)	$	(1,192	)	$	395	$	(5	)
	Other comprehensive income	365			40			—			405			47		—			$	452
	Income tax expense	(128		)	(14		)	—			(142		)	—		—			(142		)
	Three months ended March 31, 2014	$	(690	)	$	(231	)	$	(8	)	$	(929	)	$	442	$	(5	)	$	310
Reclassifications	'
	Reclassifications. Certain reclassifications of prior period information have been made to conform to the presentation of the current period information. These reclassifications had no effect on net income as previously reported.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	'
	The Company’s financial assets and liabilities as of March 31, 2014 that are measured at fair value on a recurring basis were as follows (in thousands):
		Level 1			Level 2			Level 3
	ASSETS
	Marketable securities(1)	$	29,522		$	—		$	—
	Derivative instruments (included in other receivables)	3,945			4,396			—
	Construction reserve funds and Title XI reserve funds	264,339			—			—
	LIABILITIES
	Short sale of marketable securities (included in other current liabilities)	10,223			—			—
	Derivative instruments (included in other current liabilities)	1,490			1,808			—
	______________________
	-1	Marketable security gains, net include unrealized gains of $4.9 million and $4.0 million for the three months ended March 31, 2014 and 2013, respectively, related to marketable security positions held by the Company as of March 31, 2014.
Estimated Fair Value Of Other Financial Assets And Liabilities	'
	The estimated fair values of the Company’s other financial assets and liabilities as of March 31, 2014 were as follows (in thousands):
					Estimated Fair Value
		Carrying			Level 1			Level 2			Level 3
		Amount
	ASSETS
	Cash, cash equivalents and restricted cash	$	389,280		$	389,280		$	—		$	—
	Investments, at cost, in 50% or less owned companies (included in other	9,331			see below
	assets)
	Notes receivable from third parties (included in other receivables and other assets)	12,931			see below
	LIABILITIES
	Long-term debt, including current portion(1)	880,058			—			1,081,997			—
	______________________
	-1	The estimated fair value includes the conversion options on the Company's 2.5% and 3.0% Convertible Senior Notes.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis	'
	The Company’s non-financial assets and liabilities that were measured at fair value during the three months ended March 31, 2014 were as follows (in thousands):
			Level 1			Level 2			Level 3
	ASSETS
	Long-lived assets held for sale(1)		$	—		$	11,700		$	—
	______________________
	-1	During the three months ended March 31, 2014, the Company recognized impairment charges of $3.9 million related to two aircraft following the adjustment of their carrying value to fair value based on the expected sales price of each.

Derivative_Instruments_And_Hed1

Derivative Instruments And Hedging Strategies (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative [Line Items]	'
Fair Values Of Derivative Instruments	'
	The fair values of the Company’s derivative instruments as of March 31, 2014 were as follows (in thousands):
		Derivative			Derivative
		Asset			Liability
	Options on equities and equity indices	$	236		$	—
	Forward currency exchange, option and future contracts	255			75
	Interest rate swap agreements	—			1,307
	Commodity swap, option and future contracts:
	Exchange traded	3,945			1,473
	Non-exchange traded	3,905			443
		$	8,341		$	3,298
Not Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Recognized Gains (Losses) On Derivative Instruments Not Designated As Hedging Instruments	'
	Other Derivative Instruments. The Company recognized gains (losses) on derivative instruments not designated as hedging instruments for the three months ended March 31 as follows (in thousands):
		2014			2013
	Options on equities and equity indices	$	13		$	(2,284	)
	Forward currency exchange, option and future contracts	11			(598		)
	Interest rate swap agreements	(65		)	89
	Commodity swap, option and future contracts:
	Exchange traded	1,841			(744		)
	Non-exchange traded	(2,037		)	1,430
		$	(237	)	$	(2,107	)

Equipment_Acquisitions_Disposi1

Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies (Tables)	3 Months Ended
	Mar. 31, 2014
Equipment Acquisitions, Dispositions And Depreciation And Impairment Policies [Abstract]	'
Schedule Of Deferred Gain Activity	'
	Deferred gain activity related to these transactions for the three months ended March 31 was as follows (in thousands):
		2014			2013
	Balance at beginning of period	$	124,763		$	111,514
	Amortization of deferred gains included in operating expenses as a reduction to rental expense	(3,314		)	(2,801		)
	Amortization of deferred gains included in gains on asset dispositions and impairments, net	(976		)	(716		)
	Balance at end of period	$	120,473		$	107,997
Schedule of Estimated Useful Life of Newly Acquired Equipment	'
	As of March 31, 2014, the estimated useful life (in years) of each of the Company’s major categories of new equipment was as follows:
	Offshore support vessels (excluding wind farm utility)	20
	Wind farm utility vessels	10
	Inland river dry-cargo and deck barges	20
	Inland river liquid tank barges	25
	Inland river towboats	25
	U.S.-flag product tankers	25
	RORO(1) vessels	20
	Harbor tugs	25
	Ocean liquid tank barges	25
	Terminal and manufacturing facilities	20
	______________________
	-1	Roll on/Roll off ("RORO").

Earnings_Per_Common_Share_of_S1

Earnings Per Common Share of SEACOR (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Common Share of SEACOR [Abstract]	'
Schedule of Weighted Average Number of Shares	'
	Computations of basic and diluted earnings per common share of SEACOR were as follows (in thousands, except share data):
		Three Months Ended March 31,
		Net Income (Loss) Attributable to SEACOR			Average O/S Shares	Per Share
	2014
	Basic Weighted Average Common Shares Outstanding	$	11,509		20,109,373	$	0.57
	Effect of Dilutive Share Awards:
	Options and Restricted Stock(1)	—			436,739
	Convertible Notes(2)(3)	—			—
	Diluted Weighted Average Common Shares Outstanding	$	11,509		20,546,112	$	0.56
	2013
	Basic Weighted Average Common Shares Outstanding	$	(20,988	)	19,738,930	$	(1.06	)
	Effect of Dilutive Share Awards:
	Options and Restricted Stock(1)	—			—
	Convertible Notes(2)	—			—
	Diluted Weighted Average Common Shares Outstanding	$	(20,988	)	19,738,930	$	(1.06	)
	______________________
	-1	For the three months ended March 31, 2014 and 2013, diluted earnings per common share of SEACOR excluded 212,859 and 1,474,897 of certain share awards, respectively, as the effect of their inclusion in the computation would be anti-dilutive.
	-2	For the three months ended March 31, 2014 and 2013, diluted earnings per common share of SEACOR excluded 4,200,525 common shares issuable pursuant to the Company's 2.5% Convertible Senior Notes as the effect of their inclusion in the computation would be anti-dilutive.
	-3	For the three months ended March 31, 2014, diluted earnings per common share of SEACOR excluded 1,825,326 common shares issuable pursuant to the Company's 3.0% Convertible Senior Notes as the effect of their inclusion in the computation would be anti-dilutive.

Share_Based_Compensation_Table

Share Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share Based Compensation Plans	'
	ransactions in connection with the Company’s share based compensation plans during the three months ended March 31, 2014 were as follows:
	Director stock awards granted	625
	Employee Stock Purchase Plan (“ESPP”) shares issued	16,720
	Restricted stock awards granted	139,045
	Restricted stock awards canceled	1,000
	Shares released from Deferred Compensation Plan	—
	Stock Option Activities:
	Outstanding as of December 31, 2013	1,481,280
	Granted	45,050
	Exercised	(59,584	)
	Outstanding as of March 31, 2014	1,466,746
	Shares available for future grants and ESPP purchases as of March 31, 2014	308,055

Segment_Information_Segment_In

Segment Information Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Operating Results, Capital Expenditures And Assets By Reporting Segment	'
	The following tables summarize the operating results, capital expenditures and assets of the Company's reportable segments.
		Offshore		Inland		Shipping		ICP(1)(2)		Other		Corporate		Total
		Marine		River		Services		$’000		$’000		and		$’000
		Services		Services		$’000						Eliminations
		$’000		$’000								$’000
	For the three months ended
	31-Mar-14
	Operating Revenues:
	External customers	128,957		57,011		52,401		58,656		12,992		—		310,017
	Intersegment	44		948		—		—		—		(992	)	—
		129,001		57,959		52,401		58,656		12,992		(992	)	310,017
	Costs and Expenses:
	Operating	94,043		39,674		26,997		47,274		11,936		(948	)	218,976
	Administrative and general	15,160		4,337		5,896		511		3,111		9,062		38,077
	Depreciation and amortization	16,304		7,370		7,754		990		85		889		33,392
		125,507		51,381		40,647		48,775		15,132		9,003		290,445
	Gains (Losses) on Asset Dispositions	7,738		853		—		—		(409	)	(3,504	)	4,678
	and Impairments, Net
	Operating Income (Loss)	11,232		7,431		11,754		9,881		(2,549	)	(13,499	)	24,250
	Other Income (Expense):
	Derivative gains (losses), net	(61	)	—		—		718		(733	)	(161	)	(237	)
	Foreign currency gains (losses), net	107		(327	)	(10	)	—		9		22		(199	)
	Other, net	—		(38	)	(3,933	)	193		175		(52	)	(3,655	)
	Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,641		(412	)	753		—		(761	)	—		2,221
	Segment Profit (Loss)	13,919		6,654		8,564		10,792		(3,859	)
	Other Income (Expense) not included in Segment Profit (Loss)													(2,290	)
	Less Equity Earnings included in Segment Profit (Loss)													(2,221	)
	Income Before Taxes, Equity Earnings and Discontinued Operations													17,869
	Capital Expenditures	22,019		22,162		157,712		1,379		100		15,757		219,129
	As of March 31, 2014
	Property and Equipment:
	Historical cost	1,154,201		495,360		499,084		44,166		3,750		27,651		2,224,212
	Accumulated depreciation	(483,230	)	(154,706	)	(231,279	)	(12,374	)	(710	)	(12,212	)	(894,511	)
		670,971		340,654		267,805		31,792		3,040		15,439		1,329,701
	Construction in progress	106,872		36,346		164,351		2,118		201		15,641		325,529
		777,843		377,000		432,156		33,910		3,241		31,080		1,655,230
	Investments, at Equity, and Advances to 50% or Less Owned Companies	102,543		64,778		199,997		—		89,128		—		456,446
	Inventories	6,110		2,705		1,298		13,600		1,249		—		24,962
	Goodwill	13,367		2,744		1,852		—		—		—		17,963
	Intangible Assets	3,217		7,306		717		—		327		—		11,567
	Other current and long-term assets, excluding cash and near cash assets(3)	146,796		50,583		19,032		15,049		42,552		21,714		295,726
	Segment Assets	1,049,876		505,116		655,052		62,559		136,497
	Cash and near cash assets(3)													683,141
	Total Assets													3,145,035
	______________________
	-1	Operating revenues includes $57.4 million of tangible product sales and operating expenses includes $45.8 million of costs of goods sold.
	-2	Inventories includes raw materials of $2.2 million and work in process of $1.8 million.
	-3	Cash and near cash assets includes cash, cash equivalents, restricted cash, marketable securities, construction reserve funds and Title XI reserve funds.
		Offshore		Inland		Shipping		ICP(1)(2)		Other		Corporate		Total
		Marine		River		Services		$’000		$’000		and		$’000
		Services		Services		$’000						Eliminations
		$’000		$’000								$’000
	For the three months ended
	31-Mar-13
	Operating Revenues:
	External customers	123,992		49,423		46,476		32,849		14,324		—		267,064
	Intersegment	24		654		—		—		—		(678	)	—
		124,016		50,077		46,476		32,849		14,324		(678	)	267,064
	Costs and Expenses:
	Operating	90,031		36,389		26,614		34,045		14,488		(654	)	200,913
	Administrative and general	14,827		4,024		5,177		661		1,656		9,300		35,645
	Depreciation and amortization	16,287		7,084		7,797		1,489		99		792		33,548
		121,145		47,497		39,588		36,195		16,243		9,438		270,106
Gains (Losses) on Asset Dispositions and Impairments, Net	2,339		697		(3,069	)	—		1,907		141		2,015
Operating Income (Loss)	5,210		3,277		3,819		(3,346	)	(12	)	(9,975	)	(1,027	)
Other Income (Expense):
Derivative gains (losses), net	150		—		—		39		842		(3,138	)	(2,107	)
Foreign currency losses, net	(3,264	)	(137	)	(7	)	—		(167	)	(436	)	(4,011	)
Other, net	—		—		14		—		54		(65	)	3
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	1,313		(2,387	)	(1,505	)	—		1,710		—		(869	)
Segment Profit (Loss)	3,409		753		2,321		(3,307	)	2,427
Other Income (Expense) not included in Segment Profit (Loss)													(5,678	)
Less Equity in Losses included in Segment Profit (Loss)													869
Loss Before Taxes, Equity Earnings and Discontinued Operations													(12,820	)
Capital Expenditures	19,920		5,727		6,814		—		357		1,037		33,855
As of March 31, 2013
Property and Equipment:
Historical cost	1,110,480		493,140		506,279		43,788		4,032		29,173		2,186,892
Accumulated depreciation	(428,766	)	(133,827	)	(206,603	)	(7,146	)	(467	)	(8,956	)	(785,765	)
	681,714		359,313		299,676		36,642		3,565		20,217		1,401,127
Construction in progress	61,447		15,335		33,444		—		2,063		1,092		113,381
	743,161		374,648		333,120		36,642		5,628		21,309		1,514,508
Investments, at Equity, and Advances to 50% or Less Owned Companies	85,311		55,105		65,941		—		93,421		—		299,778
Inventories	6,497		2,297		1,284		19,868		2,020		—		31,966
Goodwill	13,367		2,759		1,852		—		—		—		17,978
Intangible Assets	5,105		8,824		1,272		72		481		—		15,754
Other current and long-term assets, excluding cash and near cash assets(3)	136,661		37,787		18,316		5,947		47,877		31,380		277,968
Segment Assets	990,102		481,420		421,785		62,529		149,427
Cash and near cash assets(3)													557,151
Discontinued operations													384
Total Assets													2,715,487
______________________
-1	Operating revenues includes $32.1 million of tangible product sales and operating expenses includes $34.4 million of costs of goods sold.
-2	Inventories includes raw materials of $3.0 million and work in process of $2.4 million.
-3	Cash and near cash assets includes cash, cash equivalents, restricted cash, marketable securities, construction reserve funds and Title XI reserve funds.

Basis_of_Presentation_and_Acco2

Basis of Presentation and Accounting Policy Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Document Period End Date	31-Mar-14	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	($929,000)	'	($1,192,000)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	405,000	'	'
Other Comprehensive Income (Loss), before Tax	452,000	-3,982,000	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	-142,000	'	'
Other Comprehensive Income (Loss), Tax	142,000	-1,227,000	'
Other Comprehensive Income (Loss), Net of Tax	310,000	-2,755,000	'
Accumulated Translation Adjustment [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-690,000	'	-927,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	365,000	'	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	-128,000	'	'
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-231,000	'	-257,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	40,000	'	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	-14,000	'	'
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-8,000	'	-8,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	0	'	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	0	'	'
Non-Controlling Interests In Subsidiaries [Member]	'	'	'
Other Comprehensive Income (Loss), Net of Tax	-47,000	'	'
Non-Controlling Interests In Subsidiaries [Member] | Accumulated Translation Adjustment [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	442,000	'	395,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Noncontrolling Interest	47,000	'	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	0	'	'
Non-Controlling Interests In Subsidiaries [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-5,000	'	-5,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Noncontrolling Interest	0	'	'
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	0	'	'
Offshore Marine Services [Member]	'	'	'
Deferred Revenue	$6,600,000	'	'

Fair_Value_Measurements_Financ

Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable security gains (losses), net include losses	$4,900,000	$4,000,000
Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	29,522,000	'
Derivative instruments (included in other receivables)	3,945,000	'
Construction reserve funds and Title XI reserve funds	264,339,000	'
Short sales of marketable securities	10,223,000	'
Derivative instruments (included in other current liabilities)	1,490,000	'
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	'
Derivative instruments (included in other receivables)	4,396,000	'
Construction reserve funds and Title XI reserve funds	0	'
Short sales of marketable securities	0	'
Derivative instruments (included in other current liabilities)	1,808,000	'
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	'
Derivative instruments (included in other receivables)	0	'
Construction reserve funds and Title XI reserve funds	0	'
Short sales of marketable securities	0	'
Derivative instruments (included in other current liabilities)	$0	'

Fair_Value_Measurements_Estima

Fair Value Measurements (Estimated Fair Value Of Other Financial Assets And Liabilities) (Details) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Cash, cash equivalents and restricted cash, Carrying Amount	$389,280
Investments, at cost, in 50% or less owned companies (included in other assets), Carrying Amount	9,331
Notes receivable from other business ventures (included in other receivables and other assets)	12,931
Long-term debt, including current portion, Carrying Amount	880,058
Fair Value, Inputs, Level 1 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Cash and Cash Equivalents, Fair Value Disclosure	389,280
Debt Instrument, Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Cash and Cash Equivalents, Fair Value Disclosure	0
Debt Instrument, Fair Value Disclosure	1,081,997
Fair Value, Inputs, Level 3 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Cash and Cash Equivalents, Fair Value Disclosure	0
Debt Instrument, Fair Value Disclosure	$0
Two Point Five Percentage Convertible Notes [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Three Point Zero Percentage Convertible Notes [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Debt Instrument, Interest Rate, Stated Percentage	3.00%

Fair_Value_Measurements_NonFin

Fair Value Measurements (Non-Financial Assets And Liabilities Measured At Fair Value) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Fair Value, Inputs, Level 1 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets Held-for-sale, Long Lived	$0
Fair Value, Inputs, Level 2 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets Held-for-sale, Long Lived	11,700,000
Fair Value, Inputs, Level 3 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets Held-for-sale, Long Lived	0
Aircraft [Domain]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Asset Impairment Charges	$3,900,000

Derivative_Instruments_And_Hed2

Derivative Instruments And Hedging Strategies (Fair Values Of Derivative Instruments) (Details) (Not Designated as Hedging Instrument [Member], USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	$8,341
Derivative Liability	3,298
Options On Equities And Equity Indices [Member]	'
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	236
Derivative Liability	0
Foreign Exchange [Member]	'
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	255
Derivative Liability	75
Interest Rate Swap Agreements [Member]	'
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability	1,307
Commodity Contract [Member]	'
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	3,945
Derivative Liability	1,473
Commodity Swap, Option And Future Contracts, Non-Exchange Traded [Member]	'
Derivative [Line Items]	'
Derivative Asset, Fair Value, Gross Asset	3,905
Derivative Liability	$443

Derivative_Instruments_And_Hed3

Derivative Instruments And Hedging Strategies (Narrative) (Details) (Cash Flow Hedging [Member], USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Sea Cat Crewzer [Member]	'
Derivative [Line Items]	'
Fixed interest rate	1.48%
Derivative, Notional Amount	$16.40
SCFCo Holdings [Member]	'
Derivative [Line Items]	'
Derivative, Notional Amount	26.7
Fixed interest rate range, minimum	1.53%
Fixed interest rate range, maximum	4.16%
Seajon [Member]	'
Derivative [Line Items]	'
Fixed interest rate	2.79%
Derivative, Notional Amount	$36.70

Derivative_Instruments_And_Hed4

Derivative Instruments And Hedging Strategies (Recognized Gains (Losses) On Derivative Instruments Not Designated As Hedging Instruments) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative [Line Items]	'	'
Derivative gains (losses), net	($237,000)	($2,107,000)
Options On Equities And Equity Indices [Member]	'	'
Derivative [Line Items]	'	'
Derivative gains (losses), net	13,000	-2,284,000
Forward Currency Exchange, Option And Future Contracts [Member]	'	'
Derivative [Line Items]	'	'
Derivative gains (losses), net	11,000	-598,000
Interest Rate Swap Agreements [Member]	'	'
Derivative [Line Items]	'	'
Derivative gains (losses), net	-65,000	89,000
Commodity Contract [Member]	'	'
Derivative [Line Items]	'	'
Derivative gains (losses), net	1,841,000	-744,000
Commodity Swap, Option And Future Contracts, Non-Exchange Traded [Member]	'	'
Derivative [Line Items]	'	'
Derivative gains (losses), net	-2,037,000	1,430,000
Not Designated as Hedging Instrument [Member] | Forward Currency Exchange, Option And Future Contracts [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Notional Amount	17,700,000	'
Not Designated as Hedging Instrument [Member] | Interest Rate Swap Agreements [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Lower Fixed Interest Rate Range	3.00%	'
Derivative, Higher Fixed Interest Rate Range	3.05%	'
Derivative, Notional Amount	36,100,000	'
Not Designated as Hedging Instrument [Member] | Dynamic Offshore Drilling Ltd [Member] | Interest Rate Swap Agreements [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Notional Amount	100,700,000	'
Derivative, Fixed Interest Rate	1.30%	'
Not Designated as Hedging Instrument [Member] | OSV Partners [Member] | Interest Rate Swap Agreements [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Lower Fixed Interest Rate Range	1.89%	'
Derivative, Higher Fixed Interest Rate Range	2.27%	'
Derivative, Notional Amount	26,100,000	'
Not Designated as Hedging Instrument [Member] | Dorian LPG [Member] | Interest Rate Swap Agreements [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Lower Fixed Interest Rate Range	2.96%	'
Derivative, Higher Fixed Interest Rate Range	5.40%	'
Derivative, Notional Amount	$127,300,000	'

Business_Acquisitions_Narrativ

Business Acquisitions (Narrative) (Details) (C Lift L L C [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Jun. 06, 2013
Business Acquisition [Line Items]	'	'
Business Acquisition, Percentage of Voting Interests Acquired	'	50.00%
Payments to Acquire Businesses, Gross	$13.30	'
Liftboats [Member]	'	'
Business Acquisition [Line Items]	'	'
Number Of Equipments Acquired	'	2

Equipment_Acquisitions_Disposi2

Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies (Deferred Gain Activity) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Movement in Deferred Gain Activity [Roll Forward]	'	'
Deferred Gains at Beginning of Period	$124,763	$111,514
Amortization Of Deferred Gains Included in Operating Expenses As A Reduction To Rental Expense	-3,314	-2,801
Amortization Of Deferred Gains Included In Gains On Asset Dispositions And Impairments, Net	-976	-716
Deferred Gains at End of Period	$120,473	$107,997

Equipment_Acquisitions_Disposi3

Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies (Useful Life) (Details)	3 Months Ended
	Mar. 31, 2014
Offshore Support Vessels [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'20 years
Wind Farm Utility Vessel [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'10 years
Inland River Dry Cargo And Deck Barges [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'20 years
Inland River Liquid Tank Barges [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'25 years
Inland River Towboats [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'25 years
U.S.-flag Product Tankers [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'25 years
R O R O Vessels [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'20 years	[1]
Harbor Tugs [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'25 years
Ocean Liquid Tank Barge [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'25 years
Terminal And Manufacturing Facilities [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful life (in years)	'20 years
[1]	Roll on/Roll off ("RORO").

Equipment_Acquisitions_Disposi4

Equipment Acquisitions, Dispositions and Depreciation and Impairment Policies (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]	'	'
Payments to Acquire Property, Plant, and Equipment	$219,129,000	$33,855,000
Sales Price Of Equipment	10,800,000	'
Proceeds from disposition of property and equipment	17,619,000	61,369,000
Gain (Loss) on Disposition of Property Plant Equipment	7,800,000	'
Amortization Of Deferred Gains Included In Gains On Asset Dispositions And Impairments, Net	-976,000	-716,000
U.S.-flag Product Tankers [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Payments to Acquire Property, Plant, and Equipment	145,600,000	'
Offshore Support Vessels Crew [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Number Of Equipments Delivered	1	'
Number Of Equipments Sold	4	'
Wind Farm Utility Vessel [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Number Of Equipments Delivered	1	'
Number Of Equipments Sold	1	'
Inland River Dry Cargo And Deck Barges [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Number Of Equipments Delivered	28	'
Aircraft [Domain]	'	'
Property, Plant and Equipment [Line Items]	'	'
Asset Impairment Charges	3,900,000	'
Gains on Asset Dispositions and Impariments, Net [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Amortization Of Deferred Gains Included In Gains On Asset Dispositions And Impairments, Net	800,000	'
Deposits [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Proceeds from disposition of property and equipment	$6,800,000	'

Investments_At_Equity_And_Adva1

Investments, At Equity, And Advances To 50% Or Less Owned Companies (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Schedule Of Equity Method Investments [Line Items]	'
Guarantor Obligations, Maximum Exposure, Undiscounted	$15.50
Allocable Share of Uncalled Capital	2.4
SCFCo Holdings [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Partners' Capital Account, Contributions	11.5
Outstanding Working Capital Advances At End Of Period	3.6
Seajon [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Partners' Capital Account, Contributions	0.2
Avion Pacific Limited [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Repayment of Notes Receivable from Related Parties	4
Cleancor [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Partners' Capital Account, Contributions	4.8
Other Inland River Joint Ventures [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital	2.1
Other Offshore Marine Services Joint Ventures [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Payments for Advance to Affiliate	0.3
Other Corporate Joint Ventures [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Payments for Advance to Affiliate	$0.20

Commitments_And_Contingencies_

Commitments And Contingencies (Narrative) (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2010

Dec. 31, 2010

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2010

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Wunstell Action [Member]

Master Complaints [Member]

Multi-district Litigation [Member]

Darnell Alexander [Member]

Darnell Alexander [Member]

Abney Litigation [Member]

Abood Litigation [Member]

HEPACO Litigation [Member]

Prejean [Member]

Offshore Support Vessels [Member]

Inland River Dry Cargo Barges [Member]

Inland River Liquid Tank Barges [Member]

Inland River Towboats [Member]

U.S.-flag Product Tankers [Member]

U.S. Flag Articulated Tug-Barge [Member]

Other Machinery and Equipment [Member]

plaintiff

plaintiff

claim

claim

claim

claim

claim

equipment

equipment

equipment

equipment

equipment

equipment

Loss Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unfunded capital commitments

$442,500,000

'

'

'

'

'

'

'

'

'

$94,800,000

$22,800,000

$900,000

$4,700,000

$230,200,000

$78,700,000

$10,400,000

Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year

157,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecorded Unconditional Purchase Obligation, Due within Two Years

275,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecorded Unconditional Purchase Obligation, Due within Three Years

9,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecorded Unconditional Purchase Obligation, Maximum Quantity

'

'

'

'

'

'

'

'

'

'

15

47

2

5

3

1

'

Claims Filed

'

2

1

10

410

117

668

174

'

330

'

'

'

'

'

'

'

Loss Contingency, Damages Sought, Value

'

'

'

'

'

'

'

'

$20,291,178.92

'

'

'

'

'

'

'

'

Multiemployer_Pension_Plans_De

Multiemployer Pension Plans (Details) (American Maritime Officers Pension Plan [Member], USD $)	Sep. 30, 2013
In Millions, unless otherwise specified
American Maritime Officers Pension Plan [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Pension and other postretirement benefit plans, withdrawal liability	$46.50

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Debt Instrument [Line Items]	'	'
Letters of Credit Outstanding, Amount	$26,200,000	'
Repayments of Debt and Capital Lease Obligations	2,200,000	'
Net borrowings (repayments) on inventory financing arrangements	$1,254,000	$5,519,000
Seven Point Three Seven Five Percentage Senior Notes Due Two Thousand Nineteen Member	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Interest Rate, Stated Percentage	7.38%	'

Stock_Repurchases_Details

Stock Repurchases (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Stock Repurchases [Abstract]	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$100

Earnings_Per_Common_Share_of_S2

Earnings Per Common Share of SEACOR (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]	'	'
Net Income (Loss) attributable to SEACOR Holdings Inc.	$11,509	($20,988)
Net Income (Loss) Available to Common Stockholders, Diluted	11,509	-20,988
Weighted Average Number of Shares Outstanding, Basic	20,109,373	19,738,930
Incremental Common Shares Attributable to Share-based Payment Arrangements	436,739	0
Incremental Common Shares Attributable to Conversion of Debt Securities	0	0
Weighted Average Number of Shares Outstanding, Diluted	20,546,112	19,738,930
Earnings Per Share, Basic	$0.57	($1.06)
Earnings Per Share, Diluted	$0.56	($1.06)
Outstanding Stock Awards [Member]	'	'
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	212,859	1,474,897
Two Point Five Percentage Convertible Notes [Member]	'	'
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	4,200,525	'
Three Point Zero Percentage Convertible Notes [Member]	'	'
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,825,326	'
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]	'	'
Debt Instrument, Interest Rate, Stated Percentage	3.00%	'
Equity Securities [Member]	'	'
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]	'	'
Dilutive Securities, Effect on Basic Earnings Per Share	0	0
Convertible Debt Securities [Member]	'	'
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]	'	'
Dilutive Securities, Effect on Basic Earnings Per Share	$0	$0

Share_Based_Compensation_Share

Share Based Compensation (Share Based Compensation Plans) (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Director stock awards granted	625
Employee Stock Purchase Plan shares issued	16,720
Restricted stock awards granted	139,045
Restricted stock awards forfeited	1,000
Shares released from Deferred Compensation Plan	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'
Stock Options, Outstanding as of December 31, 2013	1,481,280
Stock Option, Granted	45,050
Stock Option, Exercised	59,584
Stock Options, Outstanding as of March 31, 2014	1,466,746
Shares available for future grants and ESPP purchases as of June 30, 2013	308,055

Segment_Information_Operating_

Segment Information (Operating Results, Capital Expenditures And Assets By Reportable Segments) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	$310,017,000	$267,064,000	'
Costs and Expenses [Abstract]	'	'	'
Administrative and general	38,077,000	35,645,000	'
Depreciation and amortization	33,392,000	33,548,000	'
Total costs and expenses	290,445,000	270,106,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	4,678,000	2,015,000	'
Operating Income (Loss)	24,250,000	-1,027,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	-237,000	-2,107,000	'
Foreign currency gains (losses), net	-199,000	-4,011,000	'
Other Nonoperating Income (Expense)	-3,655,000	3,000	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,221,000	-869,000	'
Income from Continuing Operations Before Income Tax Expense and Equity in Earnings of 50% or Less Owned Companies	17,869,000	-12,820,000	'
Capital Expenditures	219,129,000	33,855,000	'
Property, Plant and Equipment, Gross	2,224,212,000	'	2,199,183,000
Accumulated depreciation	894,511,000	'	866,330,000
Property, Plant and Equipment, Net In Service	1,329,701,000	'	1,332,853,000
Construction in Progress, Gross	325,529,000	'	143,482,000
Net property and equipment	1,655,230,000	'	1,476,335,000
Inventories	24,962,000	'	27,615,000
Goodwill	17,963,000	'	17,985,000
Intangible Assets, Net	11,567,000	'	12,423,000
Total assets	3,145,035,000	2,715,487,000	3,116,233,000
Offshore Marine Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	128,957,000	123,992,000	'
Inland River Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	57,011,000	49,423,000	'
Shipping Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	52,401,000	46,476,000	'
Illinois Corn Processing LLC [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	58,656,000	32,849,000	'
Other Income and Expenses [Abstract]	'	'	'
Sales Revenue, Goods, Net	57,400,000	32,100,000	'
Cost of Goods Sold	45,800,000	34,400,000	'
Inventory, Raw Materials	2,200,000	3,000,000	'
Inventory, Work in Process	1,800,000	2,400,000	'
Other Segments [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	12,992,000	14,324,000	'
Corporate And Eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	0	0	'
Operating Segments [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	310,017,000	267,064,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	218,976,000	200,913,000	'
Administrative and general	38,077,000	35,645,000	'
Depreciation and amortization	33,392,000	33,548,000	'
Total costs and expenses	290,445,000	270,106,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	4,678,000	2,015,000	'
Operating Income (Loss)	24,250,000	-1,027,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	-237,000	-2,107,000	'
Foreign currency gains (losses), net	-199,000	-4,011,000	'
Other Nonoperating Income (Expense)	-3,655,000	3,000	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,221,000	-869,000	'
Capital Expenditures	219,129,000	33,855,000	'
Property, Plant and Equipment, Gross	2,224,212,000	2,186,892,000	'
Accumulated depreciation	894,511,000	785,765,000	'
Property, Plant and Equipment, Net In Service	1,329,701,000	1,401,127,000	'
Construction in Progress, Gross	325,529,000	113,381,000	'
Net property and equipment	1,655,230,000	1,514,508,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	456,446,000	299,778,000	'
Inventories	24,962,000	31,966,000	'
Goodwill	17,963,000	17,978,000	'
Intangible Assets, Net	11,567,000	15,754,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	295,726,000	277,968,000	'
Operating Segments [Member] | Offshore Marine Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	129,001,000	124,016,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	94,043,000	90,031,000	'
Administrative and general	15,160,000	14,827,000	'
Depreciation and amortization	16,304,000	16,287,000	'
Total costs and expenses	125,507,000	121,145,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	7,738,000	2,339,000	'
Operating Income (Loss)	11,232,000	5,210,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	-61,000	150,000	'
Foreign currency gains (losses), net	107,000	-3,264,000	'
Other Nonoperating Income (Expense)	0	0	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,641,000	1,313,000	'
Segment Profit (Loss)	13,919,000	3,409,000	'
Capital Expenditures	22,019,000	19,920,000	'
Property, Plant and Equipment, Gross	1,154,201,000	1,110,480,000	'
Accumulated depreciation	483,230,000	428,766,000	'
Property, Plant and Equipment, Net In Service	670,971,000	681,714,000	'
Construction in Progress, Gross	106,872,000	61,447,000	'
Net property and equipment	777,843,000	743,161,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	102,543,000	85,311,000	'
Inventories	6,110,000	6,497,000	'
Goodwill	13,367,000	13,367,000	'
Intangible Assets, Net	3,217,000	5,105,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	146,796,000	136,661,000	'
Total assets	1,049,876,000	990,102,000	'
Operating Segments [Member] | Inland River Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	57,959,000	50,077,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	39,674,000	36,389,000	'
Administrative and general	4,337,000	4,024,000	'
Depreciation and amortization	7,370,000	7,084,000	'
Total costs and expenses	51,381,000	47,497,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	853,000	697,000	'
Operating Income (Loss)	7,431,000	3,277,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	0	0	'
Foreign currency gains (losses), net	-327,000	-137,000	'
Other Nonoperating Income (Expense)	-38,000	0	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	-412,000	-2,387,000	'
Segment Profit (Loss)	6,654,000	753,000	'
Capital Expenditures	22,162,000	5,727,000	'
Property, Plant and Equipment, Gross	495,360,000	493,140,000	'
Accumulated depreciation	154,706,000	133,827,000	'
Property, Plant and Equipment, Net In Service	340,654,000	359,313,000	'
Construction in Progress, Gross	36,346,000	15,335,000	'
Net property and equipment	377,000,000	374,648,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	64,778,000	55,105,000	'
Inventories	2,705,000	2,297,000	'
Goodwill	2,744,000	2,759,000	'
Intangible Assets, Net	7,306,000	8,824,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	50,583,000	37,787,000	'
Total assets	505,116,000	481,420,000	'
Operating Segments [Member] | Shipping Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	52,401,000	46,476,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	26,997,000	26,614,000	'
Administrative and general	5,896,000	5,177,000	'
Depreciation and amortization	7,754,000	7,797,000	'
Total costs and expenses	40,647,000	39,588,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	0	-3,069,000	'
Operating Income (Loss)	11,754,000	3,819,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	0	0	'
Foreign currency gains (losses), net	-10,000	-7,000	'
Other Nonoperating Income (Expense)	-3,933,000	14,000	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	753,000	-1,505,000	'
Segment Profit (Loss)	8,564,000	2,321,000	'
Capital Expenditures	157,712,000	6,814,000	'
Property, Plant and Equipment, Gross	499,084,000	506,279,000	'
Accumulated depreciation	231,279,000	206,603,000	'
Property, Plant and Equipment, Net In Service	267,805,000	299,676,000	'
Construction in Progress, Gross	164,351,000	33,444,000	'
Net property and equipment	432,156,000	333,120,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	199,997,000	65,941,000	'
Inventories	1,298,000	1,284,000	'
Goodwill	1,852,000	1,852,000	'
Intangible Assets, Net	717,000	1,272,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	19,032,000	18,316,000	'
Total assets	655,052,000	421,785,000	'
Operating Segments [Member] | Illinois Corn Processing LLC [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	58,656,000	32,849,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	47,274,000	34,045,000	'
Administrative and general	511,000	661,000	'
Depreciation and amortization	990,000	1,489,000	'
Total costs and expenses	48,775,000	36,195,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	0	0	'
Operating Income (Loss)	9,881,000	-3,346,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	718,000	39,000	'
Foreign currency gains (losses), net	0	0	'
Other Nonoperating Income (Expense)	193,000	0	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	0	0	'
Segment Profit (Loss)	10,792,000	-3,307,000	'
Capital Expenditures	1,379,000	0	'
Property, Plant and Equipment, Gross	44,166,000	43,788,000	'
Accumulated depreciation	12,374,000	7,146,000	'
Property, Plant and Equipment, Net In Service	31,792,000	36,642,000	'
Construction in Progress, Gross	2,118,000	0	'
Net property and equipment	33,910,000	36,642,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	0	0	'
Inventories	13,600,000	19,868,000	'
Goodwill	0	0	'
Intangible Assets, Net	0	72,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	15,049,000	5,947,000	'
Total assets	62,559,000	62,529,000	'
Operating Segments [Member] | Other Segments [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	12,992,000	14,324,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	11,936,000	14,488,000	'
Administrative and general	3,111,000	1,656,000	'
Depreciation and amortization	85,000	99,000	'
Total costs and expenses	15,132,000	16,243,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	-409,000	1,907,000	'
Operating Income (Loss)	-2,549,000	-12,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	-733,000	842,000	'
Foreign currency gains (losses), net	9,000	-167,000	'
Other Nonoperating Income (Expense)	175,000	54,000	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	-761,000	1,710,000	'
Segment Profit (Loss)	-3,859,000	2,427,000	'
Capital Expenditures	100,000	357,000	'
Property, Plant and Equipment, Gross	3,750,000	4,032,000	'
Accumulated depreciation	710,000	467,000	'
Property, Plant and Equipment, Net In Service	3,040,000	3,565,000	'
Construction in Progress, Gross	201,000	2,063,000	'
Net property and equipment	3,241,000	5,628,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	89,128,000	93,421,000	'
Inventories	1,249,000	2,020,000	'
Goodwill	0	0	'
Intangible Assets, Net	327,000	481,000	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	42,552,000	47,877,000	'
Total assets	136,497,000	149,427,000	'
Operating Segments [Member] | Corporate And Eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	-992,000	-678,000	'
Costs and Expenses [Abstract]	'	'	'
Operating Expenses	-948,000	-654,000	'
Administrative and general	9,062,000	9,300,000	'
Depreciation and amortization	889,000	792,000	'
Total costs and expenses	9,003,000	9,438,000	'
Gain (Loss) on Sale of Assets and Asset Impairment Charges	-3,504,000	141,000	'
Operating Income (Loss)	-13,499,000	-9,975,000	'
Other Income and Expenses [Abstract]	'	'	'
Derivative gains (losses), net	-161,000	-3,138,000	'
Foreign currency gains (losses), net	22,000	-436,000	'
Other Nonoperating Income (Expense)	-52,000	-65,000	'
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	0	0	'
Capital Expenditures	15,757,000	1,037,000	'
Property, Plant and Equipment, Gross	27,651,000	29,173,000	'
Accumulated depreciation	12,212,000	8,956,000	'
Property, Plant and Equipment, Net In Service	15,439,000	20,217,000	'
Construction in Progress, Gross	15,641,000	1,092,000	'
Net property and equipment	31,080,000	21,309,000	'
Investments, at Equity, and Advances to 50% or Less Owned Companies	0	0	'
Inventories	0	0	'
Goodwill	0	0	'
Intangible Assets, Net	0	0	'
Other Current And Long-Term Assets, Excluding Cash And Near Cash Assets	21,714,000	31,380,000	'
Intersegment Eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	0	0	'
Intersegment Eliminations [Member] | Offshore Marine Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	-44,000	24,000	'
Intersegment Eliminations [Member] | Inland River Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	-948,000	654,000	'
Intersegment Eliminations [Member] | Shipping Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	0	0	'
Intersegment Eliminations [Member] | Illinois Corn Processing LLC [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	0	0	'
Intersegment Eliminations [Member] | Other Segments [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	0	0	'
Intersegment Eliminations [Member] | Corporate And Eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating Revenues	992,000	-678,000	'
Segment Reconciling Items [Member]	'	'	'
Other Income and Expenses [Abstract]	'	'	'
Other Income (Expense) not included in Segment Profit	2,290,000	5,678,000	'
Less Equity Earnings (Loss) included in Segment Profit	-2,221,000	869,000	'
Cash And Near Cash Assets	683,141,000	557,151,000	'
Assets of Disposal Group, Including Discontinued Operation	'	$384,000	'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Operating Revenues	$310,017	$267,064
Administrative and general	38,077	35,645
Depreciation and amortization	33,392	33,548
Total costs and expenses	290,445	270,106
Gain (Loss) on Sale of Assets and Asset Impairment Charges	4,678	2,015
Operating Income (Loss)	24,250	-1,027
Nonoperating Income (Expense)	-6,381	-11,793
Income Tax Expense (Benefit)	6,375	-2,653
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	2,221	-869
Net Income (Loss)	13,715	-21,361
SES Business [Member]	'	'
Nonoperating Income (Expense)	'	-1,537
Income Tax Expense (Benefit)	'	-538
Net Income (Loss)	'	-999
SEI [Member]	'	'
Nonoperating Income (Expense)	'	-143
Income Tax Expense (Benefit)	'	-50
Net Income (Loss)	'	-93
Era Group [Member]	'	'
Operating Revenues	'	22,892
Operating Expenses	'	14,076
Administrative and general	'	2,653
Depreciation and amortization	'	3,875
Total costs and expenses	'	20,604
Gain (Loss) on Sale of Assets and Asset Impairment Charges	'	548
Operating Income (Loss)	'	2,836
Nonoperating Income (Expense)	'	-1,316
Income Tax Expense (Benefit)	'	10,818
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	'	65
Net Income (Loss)	'	($9,233)