Note 15 - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Estimate of Fair Value Measurement [Member]
Impaired loans	$ 6,473,000	$ 7,909,000
REO, net	116,000	569,000
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	6,473,000	7,909,000
REO, net	$ 116,000	$ 569,000