SEGMENTS (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 brand	Dec. 31, 2018 segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of business segments			2	2
Segment Reporting Information [Line Items]
Revenues, net	$ 77,488	$ 69,036			$ 258,678	$ 242,757
Operating income	9,421	7,940			44,369	39,163
Reportable Segments
Segment Reporting Information [Line Items]
Revenues, net	77,488	69,035			258,676	242,755
Operating income	12,633	11,213			53,369	47,955
Reportable Segments | Industrial Products
Segment Reporting Information [Line Items]
Revenues, net	43,652	37,906			152,239	139,654
Operating income	8,059	7,323			36,164	33,285
Reportable Segments | Specialty Chemicals
Segment Reporting Information [Line Items]
Revenues, net	33,836	31,129			106,437	103,101
Operating income	4,574	3,890			17,205	14,670
Eliminations and Other
Segment Reporting Information [Line Items]
Revenues, net	0	1			2	2
Operating income	$ (3,212)	$ (3,273)			$ (9,000)	$ (8,792)