DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Derivative [Line Items]
Gain (loss) recognized in income	$ (458,000)	$ (656,000)	$ (1,445,000)	$ (598,000)
Gain (loss) recognized in income from discontinuance of cash flow hedges			987,000
Current derivative asset	1,029,000	0	1,029,000	0	$ 0
Loss on Derivatives
Derivative [Line Items]
Accumulated other comprehensive loss	$ 2,307,000	$ 999,000	2,307,000	999,000
Tax on accumulated other comprehensive loss			$ 613,000	$ 0