DEFERRED DRYDOCK COSTS, NET (Changes in Deferred Balances) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
Deferred Drydock Costs [Roll Forward]
Balance at beginning of period			$ 6,660	$ 7,590	$ 7,590
Drydock costs accrued			1,801		2,828
Amortization of drydock costs	$ (746)	$ (877)	(2,353)	$ (2,644)	(3,507)
Unamortized dry-dock cost write-off of a retired vessel			(138)
Foreign currency translation adjustment			(196)		(251)
Balance at end of period	$ 5,774		$ 5,774		$ 6,660