18. PARENT ONLY CONDENSED FINANCIAL STATEMENTS - Selected Quarterly Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net interest income	$ 18,797	$ 17,391	$ 19,405
Provision for loan and lease losses	(541)	200	1,365
Noninterest income	345	383	274
Noninterest expense	3,377	3,087	3,768
Net income	4,361	3,057	3,207
Basic earnings per share	$ 0.54	$ 0.34	$ 0.34
Diluted earnings per share	$ 0.54	$ 0.34	$ 0.34
First Quarter [Member]
Interest income	4,996	4,651
Net interest income	4,692	4,244
Provision for loan and lease losses		100
Noninterest income	502	625
Noninterest expense	3,653	4,002
Income before taxes	1,541	767
Net income	1,006	622
Basic earnings per share	$ 0.12	$ 0.07
Diluted earnings per share	$ 0.12	$ 0.07
Price range, common stock	8.92-10.29	6.75-7.95
Second Quarter [Member]
Interest income	5,067	4,551
Net interest income	4,776	4,176
Provision for loan and lease losses		100
Noninterest income	508	448
Noninterest expense	3,699	3,612
Income before taxes	1,585	912
Net income	1,035	652
Basic earnings per share	$ 0.13	$ 0.07
Diluted earnings per share	$ 0.13	$ 0.07
Price range, common stock	8.21-9.75	7.39-9.53
Third Quarter [Member]
Interest income	4,966	4,757
Net interest income	4,679	4,396
Provision for loan and lease losses	(200)
Noninterest income	520	462
Noninterest expense	3,662	3,536
Income before taxes	1,737	1,322
Net income	1,124	893
Basic earnings per share	$ 0.14	$ 0.1
Diluted earnings per share	$ 0.14	$ 0.1
Price range, common stock	8.42-9.63	8.62-8.91
Fourth Quarter [Member]
Interest income	4,936	4,922
Net interest income	4,650	4,575
Provision for loan and lease losses	(341)
Noninterest income	647	480
Noninterest expense	3,848	3,741
Income before taxes	1,790	1,314
Net income	$ 1,196	$ 890
Basic earnings per share	$ 0.15	$ 0.1
Diluted earnings per share	$ 0.15	$ 0.1
Price range, common stock	9.05-9.99	7.89-9.58