Condensed Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 33,778	$ 30,769	$ 75,018	$ 28,704
Foreign Currency translation gain (losses)	(3,968)	4,050	(1,730)	(488)
Reclassification of foreign currency translation gains to foreign currency gains (losses), net	0	0	(11)	0
Derivative gains on cash flow hedges	171	192	148	572
Reclassification of derivative (gains) losses on cash flow hedges to equity in earnings of 50% or less owned companies	120	(65)	335	253
Other Comprehensive Income (Loss), before Tax	(3,677)	4,177	(1,258)	337
Income tax (expense) benefit	1,139	(1,311)	376	(125)
Other Comprehensive Income (Loss), Net of Tax	(2,538)	2,866	(882)	212
Comprehensive Income	31,240	33,635	74,136	28,916
Comprehensive Income attributable to Noncontrolling Interests in subsidiaries	5,893	910	14,796	110
Comprehensive Income attributable to SEACOR Holdings Inc.	$ 25,347	$ 32,725	$ 59,340	$ 28,806