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Allocation of Purchase Price for Acquisition (Detail) (USD $)
In Thousands, unless otherwise specified

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2013

Jun. 04, 2013

Troms Offshore Supply AS

Business Combination Allocation of Purchase Price [Line Items]

Cash

$ 22,263

Trade receivables and other current assets

9,816

Vessels

245,605

^[1]

Goodwill

283,699

^[2]

283,699

^[2]

339,982

^[3]

297,822

^[3]

42,160

Payable and other liabilities

(13,020)

Notes payable

(156,824)

Total purchase price

$ 150,000

[1]	Includes $10.7 million in costs attributed to vessels under construction.
[2]	The total carrying amount of goodwill at September 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.
[3]	The total carrying amount of goodwill at September 30, 2013 is net of accumulated impairment charges $30.9 million related to the Middle East/North Africa segment.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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