Note 1 - Summary of Significant Accounting Policies (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2006
Covered Loan Adjustment	$ 2,900,000
Covered OREO Adjustment		7.3
FDIC Indemnification Asset Adjustment		6.9
Accrued Interest Payable And Other Liabilities Adjustment	8.7
Goodwill And Other Intangible Assets Adjustment	$ 5,400,000
Finite-Lived Intangible Assets, Remaining Amortization Period	13