Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits [Line Items]
Generated tax credits	$ 164	$ 160	$ 329	$ 318
Tax benefits from taxable losses	48	51	96	102
Raymond James California Housing Opportunities Fund II [Member]
Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits [Line Items]
Generated tax credits	43	29	87	57
Tax benefits from taxable losses	13	11	26	23
WNC Institutional Tax Credit Fun 38, L.P. [Member]
Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits [Line Items]
Generated tax credits	27	25	54	49
Tax benefits from taxable losses	8	8	15	16
Merritt Community Capital Corporation Fund XV, L.P. [Member]
Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits [Line Items]
Generated tax credits	54	66	109	133
Tax benefits from taxable losses	15	19	30	38
California Affordable Housing Fund [Member]
Note 9 - Qualified Affordable Housing Project Investments (Details) - Generated Tax Credits and Tax Benefits [Line Items]
Generated tax credits	40	40	79	79
Tax benefits from taxable losses	$ 12	$ 13	$ 25	$ 25