Note 18 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]
Impaired loans	$ 0	$ 0
REO, net	0	0
Fair Value, Inputs, Level 2 [Member]
Impaired loans	0	0
REO, net	0	0
Fair Value, Inputs, Level 3 [Member]
Impaired loans	7,105	7,909
REO, net	963	569
Estimate of Fair Value Measurement [Member]
Impaired loans	7,105	7,909
REO, net	$ 963	$ 569