Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Mar. 31, 2015
Other Current Assets, Other Assets Accrued Expenses Other Current Liabilities and other Non current liabilities and Deferred Credits [Abstract]
Taxes payable	$ 41,480	$ 56,620
Deferred gain on vessel sales - current	24,403	25,057
Other	370	784
Other current liabilities	$ 66,253	$ 82,461