Note 25 - Qualified Affordable Housing Partnership Investments - Generated Tax Credits and Benefits from Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Generated tax credits	$ 665	$ 648	$ 622
Tax benefits from taxable losses	178	189	192
Raymond James California Housing Opportunities Fund II [Member]
Generated tax credits	178	173	115
Tax benefits from taxable losses	49	53	45
WNC Institutional Tax Credit Fun 38 L.P. [Member]
Generated tax credits	112	99	84
Tax benefits from taxable losses	28	27	21
Merritt Community Capital Corporation Fund XV, L.P. [Member]
Generated tax credits	217	218	265
Tax benefits from taxable losses	57	60	75
California Affordable Housing Fund [Member]
Generated tax credits	158	158	158
Tax benefits from taxable losses	$ 44	$ 49	$ 51