Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v2.4.0.6
Long-Term Debt (Narrative) (Details) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
SEACOR Revolving Credit Facility [Member]
Dec. 07, 2012
7.750%Senior Notes [Member]
Debt Instrument [Line Items]        
Face amount       $ 200,000,000.0
Stated interest rate       7.75%
Proceeds from issuance of long-term debt 15,000,000 38,000,000   191,900,000
Line of credit outstanding     50,000,000  
Remaining borrowing capacity     149,300,000  
Letters of credit outstanding     700,000  
Borrowing from lines of credit     15,000,000  
Repayments of lines of credit     (15,000,000)  
Payments on other long-term debt $ 700,000