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Comparison of Total Assets (Detail) - USD ($) $ in Thousands | Jun. 30, 2016 | Mar. 31, 2016
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Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | $ 4,877,858 | $ 4,983,793
Investments in, at equity, and advances to unconsolidated companies |  | 36,989 | 37,502
All Other Segments |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 41,817 | 42,191
Assets Before Corporate Assets |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 3,979,497 | 4,063,801
Assets Before Equity Method Investments |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 4,016,486 | 4,101,303
Operating Segments |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 3,937,680 | 4,021,610
Operating Segments | Americas |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 1,111,872 | 1,101,699
Operating Segments | Asia/Pacific |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 463,980 | 514,948
Operating Segments | Middle East |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 451,178 | 405,420
Operating Segments | Africa/Europe |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 1,910,650 | 1,999,543
Corporate |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets | [1] | $ 861,372 | $ 882,490
[1] | Included in Corporate are vessels currently under construction which have not yet been assigned to a non-corporate reporting segment. A vessel’s construction costs are reported in Corporate until the earlier of the date the vessels is assigned to a non-corporate reporting segment or the date it is delivered. At June 30, 2016 and March 31, 2016, $123.7 million and $136.8 million, respectively, of vessel construction costs are included in Corporate

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