Note 18 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

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)
June 30, 2014
ASSETS
Available-for-sale securities:
U.S. Treasury	$	3,994	$	--	$	3,994	$	--
U.S. Government agencies		238,411		--		238,411		--
Mortgage-backed securities		1,958		--		1,958		--
State and political subdivisions		6,920		--		6,920		--
Other securities		19,053		--		19,053		--
Assets held in trading accounts		6,881		3,320		3,561		--
December 31, 2013
ASSETS
Available-for-sale securities:
U.S. Treasury	$	3,985	$	--	$	3,985	$	--
U.S. Government agencies		178,217		--		178,217		--
Mortgage-backed securities		1,891		--		1,891		--
State and political subdivisions		7,861		--		7,861		--
Other securities		20,323		1,504		18,819		--
Assets held in trading accounts		8,978		1,520		7,458		--

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)
June 30, 2014
ASSETS
Impaired loans (1) (2) (collateral dependent)	$	6,138	$	--	$	--	$	6,138
Foreclosed assets held for sale (1)		561		--		--		561
December 31, 2013
ASSETS
Impaired loans (1) (2) (collateral dependent)	$	2,768	$	--	$	--	$	2,768
Foreclosed assets held for sale (1)		642		--		--		642

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

	Carrying		Fair Value Measurements
(In thousands)	Amount		Level 1		Level 2		Level 3		Total
June 30, 2014
Financial assets:
Cash and cash equivalents	$	422,660	$	422,660	$	--	$	--	$	422,660
Held-to-maturity securities		799,963		--		800,401		--		800,401
Mortgage loans held for sale		20,409		--		--		20,409		20,409
Interest receivable		14,254		--		14,254		--		14,254
Legacy loans		1,841,312		--		--		1,864,660		1,864,660
Loans acquired, not covered by FDIC loss share		398,967		--		--		392,957		392,957
Loans acquired, covered by FDIC loss share		121,524		--		--		120,413		120,413
FDIC indemnification asset		30,508		--		--		30,508		30,508
Financial liabilities:
Non-interest bearing transaction accounts		838,543		--		838,543		--		838,543
Interest bearing transaction accounts and savings deposits		1,784,040		--		1,784,040		--		1,784,040
Time deposits		1,019,142		--		--		1,022,339		1,022,339
Federal funds purchased and securities sold under agreements to repurchase		98,226		--		98,226		--		98,226
Other borrowings		115,602		--		117,707		--		117,707
Subordinated debentures		20,620		--		16,115		--		16,115
Interest payable		1,442		--		1,442		--		1,442
December 31, 2013
Financial assets:
Cash and cash equivalents	$	539,380	$	539,380	$	--	$	--	$	539,380
Held-to-maturity securities		745,688		--		731,445		--		731,445
Mortgage loans held for sale		9,494		--		--		9,494		9,494
Interest receivable		15,654		--		15,654		--		15,654
Legacy loans		1,715,196		--		--		1,694,748		1,694,748
Loans acquired, not covered by FDIC loss share		515,644		--		--		513,676		513,676
Loans acquired, covered by FDIC loss share		146,653		--		--		143,814		143,814
FDIC indemnification asset		48,791		--		--		48,791		48,791
Financial liabilities:
Non-interest bearing transaction accounts		718,438		--		718,438		--		718,438
Interest bearing transaction accounts and savings deposits		1,862,618		--		1,862,618		--		1,862,618
Time deposits		1,116,511		--		--		1,120,035		1,120,035
Federal funds purchased and securities sold under agreements to repurchase		107,887		--		107,887		--		107,887
Other borrowings		117,090		--		117,160		--		117,160
Subordinated debentures		20,620		--		12,991		--		12,991
Interest payable		1,450		--		1,450		--		1,450