Note 24 - Quarterly Financial Data (Unaudited) (Details) - Selected Quarterly Financial Data Regarding Results of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Data Regarding Results of Operations [Abstract]
Interest income	$ 9,783	$ 9,871	$ 9,920	$ 10,076	$ 10,423	$ 10,523	$ 10,728	$ 10,864	$ 39,650	$ 42,538	$ 45,390
Interest expense	123	126	131	143	387	475	503	895	523	2,260	5,138
Net interest income	9,660	9,745	9,789	9,933	10,036	10,048	10,225	9,969	39,127	40,278	40,252
Provision for loan losses	(1,800)	(500)			1,800	645	670	350	(2,300)	3,465	13,075
Net interest income after provision for loan losses	11,460	10,245	9,789	9,933	8,236	9,403	9,555	9,619	41,427	36,813	27,177
Investment securities gains, net	40			85	23	(44)	331		125	310	10,494
Other noninterest income	3,234	3,408	3,490	3,281	3,552	3,323	3,906	3,745	13,413	14,526
Noninterest expense	9,486	10,482	10,084	10,089	10,212	9,835	11,911	10,375	40,141	42,333	53,350
Net income before provision for income taxes	5,248	3,171	3,195	3,210	1,599	2,847	1,881	2,989	14,824	9,316	857
Provision for income taxes	1,930	1,189	1,168	1,182	(224)	(19,386)	382	813	5,469	(18,415)	2,721
Net income	$ 3,318	$ 1,982	$ 2,027	$ 2,028	$ 1,823	$ 22,233	$ 1,499	$ 2,176	$ 9,355	$ 27,731	$ (1,864)
Common and per share data
Net income - basic (in Dollars per share)	$ 0.26	$ 0.15	$ 0.16	$ 0.16	$ 0.14	$ 1.74	$ 0.12	$ 0.17	$ 0.73	$ 2.17	$ (0.15)
Net income - diluted (in Dollars per share)	$ 0.26	$ 0.15	$ 0.16	$ 0.16	$ 0.14	$ 1.74	$ 0.12	$ 0.17	$ 0.73	$ 2.17	$ (0.15)