Note 10 - Income Taxes (Details) - Income Tax Reconciliation - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Reconciliation [Abstract]
Tax (benefit) provision computed at statutory rate									$ 843	$ 839	$ (1,230)
Tax exempt interest									(394)	(246)	(210)
Bank owned life insurance											(4)
Deferred tax asset valuation allowance									(937)	(679)	1,428
Other									462	40	(19)
Total benefit for income taxes	$ (9)	$ (10)	$ (5)	$ (2)	$ 22	$ (6)	$ (21)	$ (41)	$ (26)	$ (46)	$ (35)