XML 27 R79.htm IDEA: XBRL DOCUMENT v2.4.0.8
Acquisition - Additional Information (Detail) (USD $)
 0 Months Ended
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2013
Jun. 04, 2013
Troms Offshore Supply AS
Jun. 04, 2013
Troms Offshore Supply AS
Business Acquisition [Line Items]            
Business acquisition, description of acquired entity         Troms Offshore owned four deepwater PSVs, and had two additional deepwater PSVs under construction, one of which was delivered shortly after the acquisition and the other delivered in January 2014.  
Business acquisition, cash paid         $ 150,000,000  
Business acquisition, debt assumed           261,300,000
Business acquisition, Goodwill $ 283,699,000 [1] $ 283,699,000 [1] $ 339,982,000 [2] $ 297,822,000 [2]   $ 42,160,000
[1] The total carrying amount of goodwill at June 30, 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.
[2] The total carrying amount of goodwill at June 30, 2013 is net of accumulated impairment charges $30.9 million related to the Middle East/North Africa segment.