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Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Mar. 31, 2014
M
Vessel
Mar. 31, 2012
Mar. 31, 2013
Vessel
Mar. 31, 2014
Troms Offshore Supply AS
Jun. 04, 2013
Troms Offshore Supply AS
Mar. 31, 2014
Maximum
Mar. 31, 2014
Marine Equipment
Minimum
Mar. 31, 2014
Marine Equipment
Minimum
From Date of Construction
Mar. 31, 2014
Marine Equipment
Minimum
Regardless of Date Constructed
Mar. 31, 2014
Marine Equipment
Maximum
Mar. 31, 2014
Marine Equipment
Maximum
From Date of Construction
Mar. 31, 2014
Other Property Plant and Equipment
Minimum
Mar. 31, 2014
Other Property Plant and Equipment
Maximum
Mar. 31, 2014
Stacked Vessels
Y
Vessel
Mar. 31, 2013
Stacked Vessels
Y
Vessel
Mar. 31, 2013
Vessels Withdrawn
Y
Vessel
Mar. 31, 2014
Vessels Withdrawn
Vessel
Property, Plant and Equipment [Line Items]                                    
Highly liquid investments, maturities             3 months                      
Percentage of salvage values               5.00%     10.00%              
Estimated useful lives, years                 15 years 6 years   25 years 3 years 30 years        
Extended useful life, months   30                                
Inspection interval   The majority of the company's vessels require certification inspections twice in every five year period.                                
Property plant and equipment average age                             32.2 31.5 32.5  
Number Of Vessels   272   309                     15 51 2 0
Goodwill   $ 283,699 $ 297,822 [1] $ 297,822 [1] $ 42,200 $ 42,160                        
Goodwill impairment $ 56,283 $ 56,283 $ 30,932                              
[1] The total carrying amount of goodwill at March 31, 2012 is net of accumulated impairment charges $30.9 million related to the Middle East/North Africa segment.