Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2016	Mar. 31, 2015		Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Extended useful life, months			30 months
Inspection interval			The majority of the company’s vessels require certification inspections twice in every five year period
Goodwill impairment	$ 283,699	$ 56,283		$ 283,699	[1]	$ 56,283
Stacked Vessels
Property, Plant and Equipment [Line Items]
Property plant and equipment average age			12 years 6 months	20 years 8 months 12 days
Maximum
Property, Plant and Equipment [Line Items]
Highly liquid investments, maturities			3 months
Maximum | Marine Equipment
Property, Plant and Equipment [Line Items]
Percentage of salvage values			10.00%
Maximum | Marine Equipment | From Date of Construction
Property, Plant and Equipment [Line Items]
Estimated useful lives, years			25 years
Maximum | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives, years			30 years
Minimum | Marine Equipment
Property, Plant and Equipment [Line Items]
Percentage of salvage values			5.00%
Minimum | Marine Equipment | From Date of Construction
Property, Plant and Equipment [Line Items]
Estimated useful lives, years			15 years
Minimum | Marine Equipment | Regardless of Date Constructed
Property, Plant and Equipment [Line Items]
Estimated useful lives, years			6 years
Minimum | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives, years			3 years

[1] The total carrying amount of goodwill at March 31, 2014 is net of accumulated impairment charges $30.9 million and $56.3 million related to the Middle East/North Africa and Asia/Pacific segments, respectively.