RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable-trade, net	$ 321,033		$ 268,287
Accounts receivable-other, net	37,628		28,401
Deferred costs	14,389		16,589
Deferred revenue	36,012		35,648
Net sales	342,055	$ 362,176
Cost of sales	$ 275,829	295,763
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | ASU 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable-trade, net			(1,900)
Accounts receivable-other, net			1,900
Deferred costs			(3,200)
Deferred revenue			$ (3,200)
Net sales		6,200
Cost of sales		$ 6,200