Note 18 - Fair Value Measurements (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements Using
(In thousands)	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2012
ASSETS
Available-for-sale securities
U.S. Government agencies	$	164,467	$	--	$	164,467	$	--
Mortgage-backed securities		24,333		--		24,333		--
Other securities		16,251		1,504		14,747		--
Assets held in trading accounts		7,002		1,600		5,402		--
December 31, 2011
ASSETS
Available-for-sale securities
U.S. Government agencies	$	153,627	$	--	$	153,627	$	--
Mortgage-backed securities		2,557		--		2,557		--
Other securities		16,027		1,503		14,524		--
Assets held in trading accounts		7,541		1,800		5,741		--

Fair Value Measurements, Nonrecurring [Table Text Block]

			Fair Value Measurements Using
(In thousands)	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2012
ASSETS
Impaired loans (1) (2) (collateral dependent)	$	3,624	$	--	$	--	$	3,624
Foreclosed assets held for sale (1)		1,523		--		--		1,523
December 31, 2011
ASSETS
Impaired loans (1) (2) (collateral dependent)	$	10,173	$	--	$	--	$	10,173
Foreclosed assets held for sale (1)		2,664		--		--		2,664

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Carrying		Fair Value Measurements
(In thousands)	Amount		Level 1		Level 2		Level 3		Total
September 30, 2012
Financial assets:
Cash and cash equivalents	$	488,451	$	488,451	$	--	$	--	$	488,451
Held-to-maturity securities		510,630		--		516,419		--		516,419
Mortgage loans held for sale		23,980		--		--		23,980		23,980
Interest receivable		15,253		--		15,253		--		15,253
Loans		1,623,401		--		--		1,593,995		1,593,995
Loans acquired, covered by FDIC loss share		163,657		--		--		162,335		162,335
Loans acquired, not covered by FDIC loss share		73,023		--		--		73,023		73,023
FDIC indemnification asset		59,547		--		--		59,547		59,547
Financial liabilities:
Non-interest bearing transaction accounts		543,380		--		543,380		--		543,380
Interest bearing transaction accounts and savings deposits		1,343,784		--		1,343,784		--		1,343,784
Time deposits		908,131		--		--		813,086		813,086
Federal funds purchased and securities sold under agreements to repurchase		64,829		--		64,829		--		64,829
Other borrowings		88,852		--		94,866		--		94,866
Subordinated debentures		20,620		--		15,499		--		15,499
Interest payable		1,693		--		1,693		--		1,693

December 31, 2011			Fair Value
Financial assets
Cash and cash equivalents	$	570,206	$	570,206
Held-to-maturity securities		525,444		532,206
Mortgage loans held for sale		22,976		22,976
Interest receivable		15,126		15,126
Loans not covered by loss share agreements		1,549,661		1,548,034
Loans covered by FDIC loss share agreements		158,075		157,424
FDIC indemnification asset		47,683		47,683
Financial liabilities:
Non-interest bearing transaction accounts		532,259		532,259
Interest bearing transaction accounts and savings deposits		1,239,504		1,239,504
Time deposits		878,634		882,244
Federal funds purchased and securities sold under agreements to repurchase		114,766		114,766
Other borrowings		90,170		96,129
Subordinated debentures		30,930		30,833
Interest payable		1,437		1,437