UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
NET EARNINGS	$ 12,620	$ 10,297	$ 40,066	$ 34,790
OTHER COMPREHENSIVE INCOME, NET OF TAX:
Foreign currency translation adjustments	(145)	(139)	(240)	(273)
Other comprehensive income (loss)	(145)	(139)	(240)	(273)
TOTAL COMPREHENSIVE INCOME	$ 12,475	$ 10,158	$ 39,826	$ 34,517