EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Unexercised stock options (in shares)	0	0
Basic and diluted shares outstanding [Abstract]
Weighted average shares outstanding-basic (in shares)	7,225,000	7,504,000
Effect of dilutive shares (in shares)	76,000	55,000
Weighted average shares common outstanding-diluted (in shares)	7,301,000	7,559,000
Calculation of earnings per common share - basic [Abstract]
Net earnings	$ 8,814	$ 9,477
Net earnings attributable to participating securities	0	48
Net earnings attributable to common shareholders	$ 8,814	$ 9,429
Earnings per common share - basic (in dollars per share)	$ 1.22	$ 1.26
Calculation of earnings per share - diluted [Abstract]
Net earnings attributable to common shareholders- basic	$ 8,814	$ 9,429
Add: undistributed earnings attributable to participating securities	0	0
Net earnings attributable to common shareholders- diluted	$ 8,814	$ 9,429
Earnings per common share - diluted (in dollars per share)	$ 1.21	$ 1.25
Restricted Stock Awards (RSAs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted stock awards excluded from computation of diluted earnings (in shares)	118,974	78,165