Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Measurement [Abstract]

Schedule of Fair Value Of Assets and Liabilities Measured on recurring and nonrecurring basis

			June 30, 2012 Fair Value Measurements Using:
(unaudited, in thousands)	June 30, 2012		Quoted Prices in Active  Markets for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Recurring fair value measurements
Securities – available-for-sale
Other government agencies	$	96,070	$	—	$	96,070	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		715,726		—		715,726		—
Obligations of state and political subdivisions		167,181		—		167,157		24
Corporate debt securities		38,570		—		38,570		—
Equity securities		5,577		3,877		1,700		—
Total securities – available-for-sale	$	1,023,124	$	3,877	$	1,019,223	$	24
Total recurring fair value measurements	$	1,023,124	$	3,877	$	1,019,223	$	24
Nonrecurring fair value measurements
Impaired loans	$	6,321	$	—	$	—	$	6,321
Other real estate owned and repossessed assets		3,918		—		—		3,918
Mortgage servicing rights		1,004		—		—		1,004
Loans held for sale		7,305		—		7,305		—
Total nonrecurring fair value measurements	$	18,548	$	—	$	7,305	$	11,243

			December 31, 2011 Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant  Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Recurring fair value measurements
Securities – available-for-sale
Other government agencies	$	198,720	$	—	$	198,720	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		588,092		—		588,092		—
Obligations of state and political subdivisions		180,433		—		180,386		47
Corporate debt securities		44,066		—		44,066		—
Equity securities		5,029		3,340		1,689		—
Total securities – available-for-sale	$	1,016,340	$	3,340	$	1,012,953	$	47
Total recurring fair value measurements	$	1,016,340	$	3,340	$	1,012,953	$	47
Nonrecurring fair value measurements
Impaired loans	$	7,548	$	—	$	—	$	7,548
Other real estate owned and repossessed assets		3,029		—		—		3,029
Mortgage servicing rights		1,311		—		—		1,311
Loans held for sale		6,084		—		—		6,084
Total nonrecurring fair value measurements	$	17,972	$	—	$	—	$	17,972

Schedule of Assets Measured at Fair Value on Nonrecurring Basis, Valuation Assumptions

	Quantitative Information about Level 3 Fair Value  Measurements
(unaudited, in thousands)	Fair Value Estimate		Valuation Techniques			Unobservable Input			Range /  Weighted Average
June 30, 2012:
Impaired loans	$	6,321		Appraisal of collateral (1	)		Appraisal adjustments (2	)		0% to (29.0%) / (14.6%	)
							Liquidation expenses (2	)		0% to (8.0%) / (5.4%	)
Other real estate owned and repossessed assets		3,918		Appraisal of collateral (1), (3	)
Mortgage servicing rights		1,004		Discounted cash flow			Remaining term			2.9 yrs to 27.3yrs / 15.6yrs
							Discount rate			9.0% to 12.0% / 9.7	%

(1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 inputs which are not identifiable.

(2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses are presented as a percent of the appraisal. The adjustment of appraised value is measured as the effect on fair value as a percentage of unpaid principal.

(3) Includes qualitative adjustments by management and estimated liquidation expenses.

Estimates Fair Value of Financial Instruments

					Fair Value Measurements at June 30, 2012
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active  Markets for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial Assets
Cash and due from banks	$	102,815	$	102,815	$	102,815	$	—	$	—
Securities available-for-sale		1,023,124		1,023,124		3,877		1,019,223		24
Securities held-to-maturity		572,671		607,032		—		606,236		796
Net loans		3,222,220		3,168,829		—		—		3,168,829
Loans held for sale		7,305		7,305		—		7,305		—
Accrued interest receivable		18,233		18,233		18,233		—		—
Bank owned life insurance		111,829		111,829		111,829		—		—
Financial Liabilities
Deposits		4,393,782		4,420,933		2,888,650		1,532,283		—
Federal Home Loan Bank borrowings		141,877		146,648		—		146,648		—
Other borrowings		191,275		191,702		93,116		98,586		—
Junior subordinated debt		106,083		56,083		—		56,083		—
Accrued interest payable		4,741		4,741		4,741		—		—

	December 31, 2011
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate
Financial assets:
Cash and due from banks	$	140,325	$	140,325
Securities available-for-sale		1,016,340		1,016,340
Securities held-to-maturity		592,925		621,472
Net loans		3,184,558		3,068,799
Loans held for sale		6,084		6,084
Accrued interest receivable		19,268		19,268
Bank owned life insurance		110,074		110,074
Financial liabilities:
Deposits		4,393,866		4,420,102
Federal Home Loan Bank borrowings		168,186		174,926
Other borrowings		196,887		197,922
Junior subordinated debt		106,066		56,515
Accrued interest payable		4,975		4,975