SEGMENT REPORTING, Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Net Sales [Abstract]
Net sales	$ 325,434	$ 345,664	$ 345,043	$ 356,532	$ 329,857	$ 344,226	$ 371,363	$ 373,356	$ 1,372,673	$ 1,418,802	$ 1,331,778
Long-lived tangible assets [Abstract]
Long-lived tangible assets	33,726				24,939				33,726	24,939
U.S. [Member]
Net Sales [Abstract]
Net sales									1,284,482	1,349,254	1,296,094
Long-lived tangible assets [Abstract]
Long-lived tangible assets	32,570				24,445				32,570	24,445
Non U.S [Member]
Net Sales [Abstract]
Net sales									88,191	69,548	$ 35,684
Long-lived tangible assets [Abstract]
Long-lived tangible assets	$ 1,156				$ 494				$ 1,156	$ 494