Note 23 - Income Taxes (Details) - Reconciliation of Income Taxes	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Income Taxes [Abstract]
Income tax at the federal statutory rate	34.00%	34.00%	34.00%
Return to provision adjustment for 2012 taxable gain on sale of subsidiary		6.34%
State franchise tax, net of federal tax benefit	4.89%	5.89%	3.74%
Amortization of affordable housing credit investments	11.04%	2.27%	2.64%
Officer life insurance	(3.34%)	(1.47%)	(1.30%)
Affordable housing credits	(11.67%)	(1.80%)	(1.59%)
Tax-exempt interest	(13.46%)	(7.02%)	(7.74%)
Other	0.16%	(0.27%)	2.03%
Effective Tax Rate	21.62%	37.94%	31.78%