Schedule of Other Assets (Detail) - USD ($) $ in Thousands		Jun. 30, 2017	Mar. 31, 2017
Other Assets, Noncurrent [Abstract]
Recoverable insurance losses		$ 2,710	$ 10,142
Deferred income tax assets			39,134
Savings plans and supplemental plan		14,741	14,835
Accumulated costs of rejected vessel	[1]	48,666	48,382
Restricted cash and long-term deposits		14,966	15,162
Other		11,051	11,880
Total other assets		$ 92,134	$ 139,535

[1] Refer to Note (10) of Notes to Condensed Consolidated Financial Statements for additional information regarding the vessel rejected at the time of delivery.