EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
EMPLOYEE BENEFIT PLANS [Abstract]
Company match		50.00%
Portion of employee compensation matched under 401(k)		6.00%
Non-elective company contribution as percentage of employee salary		3.00%
Vesting of matching contributions		100.00%
Company contributions	$ 4.2		$ 4.7	$ 4.5