QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
QUARTERLY FINANCIAL DATA (UNAUDITED)
Interest income	$ 15,678	$ 14,913	$ 14,108	$ 13,731	$ 13,832	$ 13,707	$ 13,677	$ 13,298	$ 58,430	$ 54,514	$ 50,426
Interest expense	1,802	1,865	1,802	1,803	1,896	1,889	1,872	1,898	7,272	7,555	7,616
Net interest income	13,876	13,048	12,306	11,928	11,936	11,818	11,805	11,400	51,158	46,959	42,810
Provision for loan losses	700	500	600	550	1,075	600	2,500	825	2,350	5,000	3,900
Net interest income after provision for loan losses	13,176	12,548	11,706	11,378	10,861	11,218	9,305	10,575	48,808	41,959	38,910
Non-interest income	2,259	2,060	2,468	2,104	2,685	2,235	3,800	1,953	8,891	10,673	6,949
Non-interest expenses	9,813	9,861	9,355	8,908	8,513	8,479	8,567	8,221	37,937	33,780	30,837
Income before income taxes	5,622	4,747	4,819	4,574	5,033	4,974	4,538	4,307	19,762	18,852	15,022
Income tax expense	2,017	1,624	1,567	1,461	1,623	1,614	1,475	1,368	6,669	6,080	4,663
Net income	$ 3,605	$ 3,123	$ 3,252	$ 3,113	$ 3,410	$ 3,360	$ 3,063	$ 2,939	$ 13,093	$ 12,772	$ 10,359
Basic earnings per share (in dollars per share)	$ 0.32	$ 0.34	$ 0.36	$ 0.35	$ 0.39	$ 0.39	$ 0.36	$ 0.35	$ 1.36	$ 1.48	$ 1.54
Diluted earnings per share (in dollars per share)	$ 0.32	$ 0.34	$ 0.36	$ 0.35	$ 0.39	$ 0.39	$ 0.36	$ 0.35	$ 1.36	$ 1.48	$ 1.54