Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Other Liabilities Current [Abstract]
Taxes payable	$ 45,854	$ 56,620
Deferred gain on vessel sales - current	23,798	25,057
Other	5,173	784
Other current liabilities	$ 74,825	$ 82,461