Schedule of Other Current Assets (Detail) - USD ($) $ in Thousands		Mar. 31, 2016	Mar. 31, 2015
Other Current Assets, Other Assets Accrued Expenses Other Current Liabilities and other Non current liabilities and Deferred Credits [Abstract]
Deposits on vessel construction options	[1]	$ 30,285
Deposits - general		8,076	$ 7,381
Prepaid expenses		6,394	10,400
Total other current assets		$ 44,755	$ 17,781

[1] Refer to Note (12) for additional discussion regarding the vessels under construction with option agreements.