PENSION BENEFIT PLANS - Schedule of Net Periodic Pension Costs of Noncontributory Defined Benefit Pension Plans (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 49	$ 0	$ 49	$ 0
Interest cost	75	0	75	0
Amortization of net loss	80	0	80	0
Net periodic pension cost	$ 204	$ 0	$ 204	$ 0