Note 19 - Quarterly Financial Data (Unaudited) (Details) - Summary of Selected Quarterly Consolidated Financial Data (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
2014
Interest income	$ 10,786		$ 10,401		$ 9,631		$ 9,655		$ 9,544		$ 9,339		$ 9,215		$ 9,107		$ 40,473	$ 37,205	$ 38,260
Interest expense	1,246		1,195		1,147		1,056		1,106		1,113		1,117		1,254		4,644	4,590	6,366
Net interest income	9,540		9,206		8,484		8,599		8,438		8,226		8,098		7,853		35,829	32,615	31,894
Provision for loan losses	300		300		300				3,760		250		925				900	4,935	1,350
Non-interest income	2,427		1,371		2,289		1,930		2,211		1,892		2,870		2,243		8,017	9,216	8,828
Non-interest expense	10,792		9,986		9,957		9,815		10,117		12,108		9,056		9,130		40,550	40,411	35,902
Provision (benefit) for income taxes	22		(6)		(21)		(41)		33		(18)		(24)		(26)		(46)	(35)	(144)
Net income	$ 853		$ 297		$ 537		$ 755		$ (3,261)		$ (2,222)		$ 1,011		$ 992		$ 2,442	$ (3,480)	$ 3,614
Net income per share (1):
Basic (in Dollars per share)	$ 0.02	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.03	[1]	$ (0.13)	[1]	$ (0.09)	[1]	$ 0.04	[1]	$ 0.04	[1]	$ 0.07	$ (0.13)	$ 0.14
Diluted (in Dollars per share)	$ 0.02	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.03	[1]	$ (0.13)	[1]	$ (0.09)	[1]	$ 0.04	[1]	$ 0.04	[1]	$ 0.07	$ (0.13)	$ 0.14

[1] Quarterly net income (loss) per share does not add to full year net income (loss) per share due to rounding.