QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
QUARTERLY FINANCIAL DATA (UNAUDITED)
Interest Income	$ 27,087	$ 25,041	$ 25,247	$ 25,440	$ 25,550	$ 25,377	$ 25,036	$ 25,316	$ 102,815	$ 101,279	$ 108,768
Net Interest Income	24,841	23,002	23,144	23,221	23,214	22,953	22,535	22,598	94,208	91,300	94,082
Net Income	$ 6,560	$ 8,457	$ 7,754	$ 6,225	$ 7,398	$ 7,632	$ 7,324	$ 3,991	$ 28,996	$ 26,345	$ 27,258
Earnings per Common Share
Basic (in dollars per share)	$ 0.31	$ 0.41	$ 0.38	$ 0.30	$ 0.36	$ 0.36	$ 0.35	$ 0.19	$ 1.40	$ 1.26	$ 1.31
Diluted (in dollars per share)	$ 0.30	$ 0.41	$ 0.38	$ 0.30	$ 0.36	$ 0.36	$ 0.35	$ 0.19	$ 1.39	$ 1.26	$ 1.30