Note 8 - Income Taxes (Details) - Deferred Tax Assets and Liabilites (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Deferred tax assets
Loans acquired	$ 18,632	$ 24,186
FDIC true-up liability	2,207	1,775
Allowance for loan losses	10,713	10,736
Valuation of foreclosed assets	222	669
Deferred compensation payable	1,755	1,676
FHLB advances	313	409
Vacation compensation	1,117	1,058
Accumulated depreciation	738	280
Loan interest	767	767
Available-for-sale securities	1,678
Other	594	569
Total deferred tax assets	38,736	42,125
Deferred tax liabilities
Deferred loan fee income and expenses, net	(3,291)	(2,373)
FHLB stock dividends	(300)	(296)
Goodwill and core deposit premium amortization	(12,289)	(11,190)
FDIC indemnification asset	(24,048)	(31,846)
Available-for-sale securities		(166)
Other	(1,879)	(3,443)
Total deferred tax liabilities	(41,807)	(49,314)
Net deferred tax liabilities included in other liabilities on balance sheets	$ (3,071)	$ (7,189)