Note 7 - Segment Information (Detail) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Net interest income	$ 7,867	$ 8,184	$ 24,832	$ 25,541
Provision expense	1,183	1,152	3,023	4,855
Noninterest income	1,674	1,058	7,127	6,404
Noninterest expense	6,957	7,001	21,451	21,080
Tax expense	294	203	2,037	1,536
Net income	1,107	886	5,448	4,474
Assets	795,954	824,116	795,954	824,116	804,177
Banking [Member]
Net interest income	7,239	7,562	22,322	23,113
Provision expense	1,170	1,150	2,957	4,795
Noninterest income	1,603	985	6,491	5,598
Noninterest expense	6,417	6,516	19,732	19,492
Tax expense	245	133	1,577	1,000
Net income	1,010	748	4,547	3,424
Assets	782,183	810,306	782,183	810,306
Consumer Finance [Member]
Net interest income	628	622	2,510	2,428
Provision expense	13	2	66	60
Noninterest income	71	73	636	806
Noninterest expense	540	485	1,719	1,588
Tax expense	49	70	460	536
Net income	97	138	901	1,050
Assets	$ 13,771	$ 13,810	$ 13,771	$ 13,810