Note 8 - Qualified Affordable Housing Partnership Investments - Original Investment in LIHTC Projects (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended			12 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015	Dec. 31, 2015
Raymond James California Housing Opportunities Fund II [Member]
Original Investment		$ 2,000		$ 2,000			$ 2,000
Current Recorded Investment		1,418		1,418			1,553
Unfunded Liability Obligation		51		51			406
Tax Credits and Benefits	[1]			171			226
Amortization of Investments	[2]			136			184
Net Income Tax Benefit				35			42
WNC Institutional Tax Credit Fun 38 L.P. [Member]
Original Investment		1,000		1,000			1,000
Current Recorded Investment		719		719			797
Unfunded Liability Obligation		77		77			166
Tax Credits and Benefits	[1]			105			126
Amortization of Investments	[2]			78			93
Net Income Tax Benefit				27			33
Merritt Community Capital Corporation Fund XV, L.P. [Member]
Original Investment		2,500		2,500			2,500
Current Recorded Investment		1,648		1,648			1,820
Unfunded Liability Obligation		367		367			610
Tax Credits and Benefits	[1]			206			278
Amortization of Investments	[2]			171			230
Net Income Tax Benefit				35			48
California Affordable Housing Fund [Member]
Original Investment		2,454		2,454			2,454
Current Recorded Investment		490		490			645
Unfunded Liability Obligation
Tax Credits and Benefits	[1]			155			207
Amortization of Investments	[2]			155			207
Net Income Tax Benefit
Original Investment		7,954		7,954			7,954
Current Recorded Investment		4,275		4,275			4,815
Unfunded Liability Obligation		495		495			1,182
Tax Credits and Benefits	[1]			637			837
Amortization of Investments		$ 180	$ 181	540	[2]	$ 542	714	[2]
Net Income Tax Benefit				$ 97			$ 123

[1] The amounts reflected in this column represent both the tax credits, and estimated tax benefits generated by operating losses for the year.

[2] This amount reduces the tax credits and benefits.