INCOME TAXES, Components of Income Tax Provision (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Deferred [Abstract]
Total deferred income tax provision (benefit)	$ 2,110,000	$ (1,319,000)	$ 1,317,000
Total income tax provision (benefit)	16,223,000	18,333,000	16,073,000
Continuing Operations [Member]
Current [Abstract]
Federal	11,423,000	16,629,000	13,204,000
State	1,243,000	2,237,000	1,562,000
Foreign	1,448,000	841,000	1,290,000
Total current income tax provision (benefit)	14,114,000	19,707,000	16,056,000
Deferred [Abstract]
Federal	2,698,000	(1,126,000)	178,000
State	(558,000)	(192,000)	(128,000)
Foreign	(31,000)	(56,000)	(33,000)
Total deferred income tax provision (benefit)	2,109,000	(1,374,000)	17,000
Total income tax provision (benefit)	16,223,000	18,333,000	16,073,000
Discontinued Operations [Member]
Current [Abstract]
Federal	0	(35,000)	(835,000)
State	0	(3,000)	(69,000)
Total current income tax provision (benefit)	0	(38,000)	(904,000)
Deferred [Abstract]
Federal	0	0	1,146,000
State	0	0	95,000
Total deferred income tax provision (benefit)	0	0	1,241,000
Total income tax provision (benefit)	$ 0	$ (38,000)	$ 337,000