Note 9 - Qualified Affordable Housing Project Investments (Details) - Anticipated Net Income Tax Benefit (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Anticipated net income tax benefit less amortization of investments:
2015	$ 96
2016	131
2017	128
2018	125
2019 and thereafter	658
Total	1,138
Raymond James California Housing Opportunities Fund II [Member]
Anticipated net income tax benefit less amortization of investments:
2015	35
2016	46
2017	46
2018	45
2019 and thereafter	263
Total	435
WNC Institutional Tax Credit Fun 38, L.P. [Member]
Anticipated net income tax benefit less amortization of investments:
2015	26
2016	37
2017	36
2018	35
2019 and thereafter	156
Total	290
Merritt Community Capital Corporation Fund XV, L.P. [Member]
Anticipated net income tax benefit less amortization of investments:
2015	35
2016	47
2017	45
2018	45
2019 and thereafter	238
Total	410
California Affordable Housing Fund [Member]
Anticipated net income tax benefit less amortization of investments:
2016	1
2017	1
2019 and thereafter	1
Total	$ 3