Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements

Schedule of financial assets and financial liabilities measured at fair value on a recurring basis

	Level 1		Level 2		Level 3		Total
	Inputs		Inputs		Inputs		Fair Value
	(dollars in thousands)
2012
Securities available for sale:
U.S. Treasury securities	$	—	$	104,656	$	—	$	104,656
Obligations of U.S. government corporations and agencies	—		370,194		—		370,194
Obligations of states and political subdivisions	—		280,288		—		280,288
Residential mortgage-backed securities	—		217,715		—		217,715
Corporate debt securities	24,714		—		—		24,714
Mutual funds and other equity securities	3,930		—		—		3,930
	$	28,644	$	972,853	$	—	$	1,001,497
2011
Securities available for sale:
U.S. Treasury securities	$	—	$	46,035	$	—	$	46,035
Obligations of U.S. government corporations and agencies	—		349,031		—		349,031
Obligations of states and political subdivisions	—		154,437		—		154,437
Residential mortgage-backed securities	—		278,115		—		278,115
Corporate debt securities	2,583		—		—		2,583
Mutual funds and other equity securities	1,548		—		—		1,548
	$	4,131	$	827,618	$	—	$	831,749

Schedule of assets and liabilities measured at fair value on a non-recurring basis

	Level 1		Level 2		Level 3		Total
	Inputs		Inputs		Inputs		Fair Value
	(dollars in thousands)
2012
Impaired loans	$	—	$	—	$	2,284	$	2,284
Foreclosed assets	—		—		511		511
2011
Impaired loans	$	—	$	—	$	4,905	$	4,905
Foreclosed assets	—		—		794		794

Schedule of quantitative information about Level 3 fair value measurements

	Quantitative Information about Level 3 Fair Value Measurements
	Fair Value		Valuation	Unobservable
December 31, 2012	Estimate		Techniques	Input	Range
	(dollars in thousands)
Impaired loans	$	2,284	Appraisal of collateral	Appraisal adjustments	-12.00% to -100.0%
Foreclosed assets	511		Appraisal of collateral	Appraisal adjustments	-51.7% to -61.1%

Schedule of estimated fair values of financial instruments

	December 31, 2012				December 31, 2011
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
	(dollars in thousands)
Financial assets:
Level 2 inputs:
Cash and due from banks	$	351,255	$	351,255	$	315,053	$	315,053
Loans held for sale	40,003		40,971		15,249		15,569
Accrued interest receivable	12,275		12,275		11,121		11,121
Level 3 inputs:
Loans, net	1,985,095		2,006,588		1,977,589		2,008,603
Financial liabilities:
Level 2 inputs:
Deposits	$	2,980,292	$	2,987,524	$	2,763,454	$	2,773,599
Securities sold under agreements to repurchase	139,024		139,024		127,867		127,867
Long-term debt	7,000		7,120		19,417		20,138
Junior subordinated debt owed to unconsolidated trusts	55,000		55,000		55,000		55,000
Accrued interest payable	1,128		1,128		1,881		1,881