EQUITY COMPENSATION (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Equity Compensation
Unrecognized compensation expense	$ 1,200,000		$ 1,200,000
Compensation Expense	742,000	1,349,000	3,081,000	2,636,000
Tax Benefit Recognized	$ 271,000	$ 502,000	$ 1,127,000	$ 955,000
Performance-Based Restricted Stock Awards
Changes in restricted stock awards
Nonvested, balance at the beginning of the period (in shares)	63,300	47,200
Granted (in shares)	21,800	27,000
Awarded (in shares)	(13,653)
Awarded in excess of target (in shares)	3,653
Not awarded (in shares)		(10,900)
Nonvested, balance at the end of the period (in shares)	75,100	63,300	75,100	63,300
Weighted Average Grant Date Price
Nonvested, balance at the beginning of the period (in dollars per share)	$ 21.74	$ 21.39
Granted (in dollars per share)	$ 30.40	$ 22.40
Awarded (in dollars per share)	$ 30.55
Award in excess of target (in dollars per share)	$ 30.55
Not awarded (in dollars per share)		$ 21.84
Nonvested, balance at the end of the period (in dollars per share)	$ 24.36	$ 21.74	$ 24.36	$ 21.74
Time-Vested Restricted Stock Awards
Assumptions used for estimating fair value of grants outstanding
Vesting period	3 years
Period from date of termination of employment due to death, retirement or disability during which the pro-rata portion of the awards are distributed	6 months
Changes in restricted stock awards
Nonvested, balance at the beginning of the period (in shares)	41,000	24,900
Granted (in shares)	19,000	22,600
Vested (in shares)	(1,654)	710
Distributed (in shares)		(3,300)
Forfeited (in shares)	(2,746)	(2,490)
Vested but not distributed (in shares)	1,654	(710)
Nonvested, balance at the end of the period (in shares)	57,254	41,710	57,254	41,710
Weighted Average Grant Date Price
Nonvested, balance at the beginning of the period (in dollars per share)	$ 21.89	$ 22.68
Granted (in dollars per share)	$ 30.40	$ 22.40
Vested (in dollars per share)	$ 21.92	$ 24.29
Distributed (in dollars per share)		$ 22.98
Forfeited ( in dollars per share)	$ 25.91
Vested but not distributed (in dollars per share)	$ 21.92
Nonvested, balance at the end of the period (in dollars per share)	$ 24.81	$ 21.89	$ 24.81	$ 21.89