SEGMENT REPORTING, Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Net Sales [Abstract]
Net sales	$ 1,568,323	$ 1,588,404	$ 1,372,673
Long-lived Tangible Assets [Abstract]
Long-lived tangible assets	34,435	39,530
U.S. [Member]
Net Sales [Abstract]
Net sales	1,476,466	1,508,329	1,284,482
Long-lived Tangible Assets [Abstract]
Long-lived tangible assets	33,504	38,297
Non U.S [Member]
Net Sales [Abstract]
Net sales	91,857	80,075	$ 88,191
Long-lived Tangible Assets [Abstract]
Long-lived tangible assets	$ 931	$ 1,233