Acquisitions, Dispositions and Atlantic and Corporate Restructuring - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended						0 Months Ended	12 Months Ended		0 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended				3 Months Ended	12 Months Ended
	Dec. 31, 2013 JointVentures	Mar. 31, 2013 Vessel	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Morgan City environmental reserve	Dec. 31, 2013 THHE Fabricators Sdn. Bhd	Dec. 31, 2013 Berlian Mcdermott Sdn Bhd	Mar. 19, 2012 Charter Fleet Business Vessel	Dec. 31, 2012 Charter Fleet Business	Dec. 31, 2011 Charter Fleet Business	Mar. 19, 2012 Secunda International Limited Vessel	Aug. 26, 2011 Marine Vessels	Dec. 31, 2011 Marine Vessels	Dec. 31, 2013 Atlantic	Dec. 31, 2013 Atlantic	Dec. 31, 2013 Atlantic Morgan City environmental reserve	Dec. 31, 2013 Atlantic Maximum	Dec. 31, 2013 Atlantic Minimum	Dec. 31, 2013 Corporate segment related charges	Dec. 31, 2013 Corporate segment related charges	Dec. 31, 2013 Corporate segment related charges Maximum	Dec. 31, 2013 Corporate segment related charges Minimum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total purchase consideration			$ 9,000,000
Purchase consideration - cash			6,000,000
Purchase consideration - restricted shares			313,580
Goodwill	5,500,000		5,500,000
Number of joint ventures entered	2
Percentage of interest acquired in subsidiary							30.00%	30.00%
Equity method investment recorded	25,500,000		25,500,000
Non controlling interest of equity method investment	20,900,000		20,900,000
Increase in capital in excess of par value	4,600,000
Number of vessels held for sale		4
Proceeds from sale of discontinued assets		32,000,000
Gain on sale of the Bold Endurance		12,500,000
Proceeds from sale of business													8,000,000
Gain (loss) on disposal of discontinued operations				257,000	(21,934,000)					257,000	(21,934,000)			7,700,000
Number of vessels sold									10
Number of vessels												14
Expected restructuring charges			54,273,000													20,934,000		60,000,000	55,000,000		33,339,000	40,000,000	35,000,000
Restructuring cost incurred			90,000,000													55,000,000	5,925,000			1,600,000	35,000,000
Accrued liabilities associated with restructuring activities	8,000,000		8,000,000			5,900,000
Restructuring charges			18,044,000
Restructuring cost incurred			$ 35,727,000												$ 14,600,000	$ 34,066,000	$ 5,925,000				$ 1,661,000