STOCK BASED COMPENSATION PLANS (Details 3) - Restricted stock	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Vesting_Year $ / shares shares	Sep. 30, 2014 USD ($) Vesting_Year shares
Stock based compensation plans
Compensation expense for restricted stock | $	$ 328,000	$ 289,000	$ 932,000	$ 803,000
Shares
Unvested, January 1, 2015 (in shares)			248,444
Granted (in shares)			66,987	80,073
Vested (in shares)			(33,419)
Forfeited (in shares)			(3,269)
Unvested, June 30, 2015 (in shares)	278,743		278,743
Weighted Average Grant-Date Fair Value
Unvested, January 1, 2015 (in dollars per share) | $ / shares			$ 22.48
Granted (in dollars per share) | $ / shares			26.05
Vested (in dollars per share) | $ / shares			21.81
Forfeited (in dollars per share) | $ / shares			26.18
Unvested, June 30, 2015 (in dollars per share) | $ / shares	$ 23.37		$ 23.37
Five year specified vesting schedule
Additional disclosure
Numbers of shares expected to vest			24,812	20,398
Vesting period			5 years	5 years
Year in vesting schedule in which one-third of the awards vest, period one | Vesting_Year			3	3
Year in vesting schedule in which one-third of the awards vest, period two | Vesting_Year			4	4
Year in vesting schedule in which one-third of the awards vest, period three | Vesting_Year			5	5
Seven year specified vesting schedule
Additional disclosure
Numbers of shares expected to vest			30,625	53,425
Vesting period			7 years	7 years
Year in vesting schedule in which one-third of the awards vest, period one | Vesting_Year			5	5
Year in vesting schedule in which one-third of the awards vest, period two | Vesting_Year			6	6
Year in vesting schedule in which one-third of the awards vest, period three | Vesting_Year			7	7
Five year ratable vesting
Additional disclosure
Vesting period			5 years
Remaining number of shares			10,550
Two year ratable vesting
Additional disclosure
Numbers of shares expected to vest			1,000	6,250
Vesting period			2 years	2 years