INTANGIBLE ASSETS - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2017	Mar. 31, 2017
Intangible Assets [Line Items]
Gross Amount	$ 74,554	$ 73,315
Accumulated Amortization	(30,965)	(25,324)
Trade names and trademarks not being amortized
Intangible Assets [Line Items]
Gross Amount	$ 11,358	11,321
Patents
Intangible Assets [Line Items]
Wtd Avg Life (Years)	12 years
Gross Amount	$ 9,636	9,576
Accumulated Amortization	$ (5,459)	(4,779)
Customer lists and amortized trademarks
Intangible Assets [Line Items]
Wtd Avg Life (Years)	12 years
Gross Amount	$ 58,168	57,421
Accumulated Amortization	$ (23,478)	(19,523)
Non-compete agreements
Intangible Assets [Line Items]
Wtd Avg Life (Years)	5 years
Gross Amount	$ 1,731	1,469
Accumulated Amortization	$ (681)	(194)
Other
Intangible Assets [Line Items]
Wtd Avg Life (Years)	12 years
Gross Amount	$ 5,019	4,849
Accumulated Amortization	$ (1,347)	$ (828)