Long-Term Debt and Capital Lease Obligations (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 27,100,000
Repayments of Debt and Capital Lease Obligations	10,027,000	64,712,000
Net borrowings (repayments) on inventory financing arrangements	2,365,000	(14,798,000)
Seacor Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	359,000,000
Letters of Credit Outstanding, Amount	$ 1,000,000
Seven Point Three Seven Five Percentage Senior Notes Due Two Thousand Nineteen Member
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.375%