EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share, Basic and Diluted [Abstract]
Net earnings attributable to common shareholders - basic and diluted	$ 15,581	$ 12,620	$ 46,225	$ 40,066
Basic and diluted common shares outstanding [Abstract]
Weighted average common shares outstanding - basic (in shares)	13,851	13,791	13,845	13,891
Effect of dilutive shares (in shares)	139	129	177	135
Weighted average shares common outstanding - diluted (in shares)	13,990	13,920	14,022	14,026
Earnings per common share - basic (in dollars per share)	$ 1.12	$ 0.92	$ 3.34	$ 2.88
Earnings per common share - diluted (in dollars per share)	$ 1.11	$ 0.91	$ 3.30	$ 2.86