Note 7 - Segment Information (Details) - Segment Reporting - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 8,149	$ 8,187	$ 17,079	$ 16,969
Provision expense	799	1,386	721	1,880
Noninterest income	1,917	1,912	5,406	6,030
Noninterest expense	7,554	6,997	14,981	14,292
Tax expense	303	372	1,749	1,919
Net income	1,410	1,344	5,034	4,908
Assets	800,373	763,813	800,373	763,813	$ 778,668
Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	7,502	7,560	15,063	14,981
Provision expense	850	1,425	675	1,800
Noninterest income	1,786	1,715	4,829	5,288
Noninterest expense	6,866	6,362	13,573	12,973
Tax expense	256	295	1,363	1,468
Net income	1,316	1,193	4,281	4,028
Assets	787,363	750,387	787,363	750,387
Consumer Finance [Member]
Segment Reporting Information [Line Items]
Net interest income	647	627	2,016	1,988
Provision expense	(51)	(39)	46	80
Noninterest income	131	197	577	742
Noninterest expense	688	635	1,408	1,319
Tax expense	47	77	386	451
Net income	94	151	753	880
Assets	$ 13,010	$ 13,426	$ 13,010	$ 13,426