GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Gross carrying amount	$ 178,640	$ 178,552
Accumulated amortization	(107,532)	(96,585)
Net carrying amount	71,108	81,967
Customer Relationships [Member]
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Gross carrying amount	167,164	167,093
Accumulated amortization	(103,375)	(93,085)
Net carrying amount	63,789	74,008
Trade Name and Other [Member]
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Gross carrying amount	11,476	11,459
Accumulated amortization	(4,157)	(3,500)
Net carrying amount	$ 7,319	$ 7,959