OTHER COMPREHENSIVE INCOME (LOSS)- Total comprehensive income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
Equity [Abstract]
Net income	$ 12,264	$ 10,788	$ 0
Other comprehensive income (loss), net of taxes	(11,312)	(3,978)
Comprehensive loss	$ 952	$ 6,810	$ 0