Note 16 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Other real estate owned	$ (64)	$ 443
Fair Value, Measurements, Nonrecurring [Member]
Total	(478)	(173)
Impaired loans	1,666		$ 1,393
Impaired loans	(307)	(173)
Other real estate owned	2,640		4,488
Other real estate owned	(171)
Total	4,306		5,881
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Impaired loans
Other real estate owned
Total
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans
Other real estate owned
Total
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans	1,666		1,393
Other real estate owned	2,640		4,488
Total	$ 4,306		$ 5,881