Note 7 - Segment Information (Details) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net interest income	$ 8,208	$ 7,930	$ 25,177	$ 24,192
Provision expense	(682)	833	1,198	675
Noninterest income	2,106	1,574	8,136	7,479
Noninterest expense	7,244	7,320	21,536	22,585
Tax expense	1,010	290	2,929	2,185
Net income	2,742	1,061	7,650	6,226
Assets	777,177	747,506	777,177	747,506	747,368
Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	7,612	7,294	22,593	21,641
Provision expense	(715)	819	1,085	554
Noninterest income	2,044	1,497	7,332	6,782
Noninterest expense	6,684	6,743	19,657	20,745
Tax expense	989	249	2,457	1,750
Net income	2,698	980	6,726	5,374
Assets	764,171	733,578	764,171	733,578
Consumer Finance [Member]
Segment Reporting Information [Line Items]
Net interest income	596	636	2,584	2,551
Provision expense	33	14	113	121
Noninterest income	62	77	804	697
Noninterest expense	560	577	1,879	1,840
Tax expense	21	41	472	435
Net income	44	81	924	852
Assets	$ 13,006	$ 13,928	$ 13,006	$ 13,928