INTEREST EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Expense [Line Items]
Amortization of deferred financing costs	$ 149	$ 901	$ 3,905	$ 1,226
Deferred payment liability	0	7	0	16
Interest expense	5,721	4,276	13,728	7,896
Long-term debt - senior
Interest Expense [Line Items]
Debt	1,961	1,210	3,305	2,384
Subordinated Debt
Interest Expense [Line Items]
Debt	$ 3,611	$ 2,158	$ 6,518	$ 4,270