SEGMENT AND RELATED INFORMATION (Quarterly Results of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting [Abstract]
Interest income	$ 9,891	$ 9,717	$ 10,045	$ 9,811	$ 9,506	$ 9,376	$ 9,325	$ 9,319	$ 39,464	$ 37,526	$ 37,601
Interest expense	940	959	989	970	928	911	905	902	3,858	3,646	3,989
Net interest income	8,951	8,758	9,056	8,841	8,578	8,465	8,420	8,417	35,606	33,880	33,612
Provision for loan losses	0	0	0	0	0	0	0	150	0	150	1,450
Net interest income after provision for loan losses	8,951	8,758	9,056	8,841	8,578	8,465	8,420	8,267	35,606	33,730	32,162
Net gains on sales of securities	2	158	101	0	8	2	52	0	261	62	0
Other income	3,082	3,132	3,138	2,793	2,972	2,928	3,340	2,602
Other expenses and provision for income taxes	9,183	9,236	9,485	9,091	9,095	8,771	9,081	8,397
NET INCOME	$ 2,852	$ 2,812	$ 2,810	$ 2,543	$ 2,463	$ 2,624	$ 2,731	$ 2,472	$ 11,017	$ 10,290	$ 9,315
Basic earnings per share	$ 0.47	$ 0.47	$ 0.47	$ 0.42	$ 0.40	$ 0.44	$ 0.46	$ 0.41	$ 1.83	$ 1.71	$ 1.56
Dividends per share	$ 0.20	$ 0.2	$ 0.2	$ 0.2	$ 0.20	$ 0.19	$ 0.19	$ 0.19	$ 0.80	$ 0.77	$ 0.76