Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Summary Of Income Tax Expense, Allocated Based On A Separate Tax Return Basis

Year Ended December 31	2012		2011		2010
Current income taxes:
Federal taxes	$	22,182	$	18,721	$	23,767
State taxes		416		354		97
		22,598		19,075		23,864
Deferred income taxes:
Federal taxes		21,175		12,929		3,943
State taxes		—		—		77
		21,175		12,929		4,020
	$	43,773	$	32,004	$	27,884

Summary Of Reconciliation Between The Statutory Tax Rate And The Actual Effective Tax Rate

Year Ended December 31	2012			2011			2010
Statutory tax rate		35.0	%		35.0	%		35.0	%
Effect of tax-free interest and dividend income		(4.7	)		(5.9	)		(6.0	)
Tax credits and settlements		(1.8	)		(1.9	)		(1.6	)
Other items		(0.1	)		(0.3	)		(0.2	)
Actual effective tax rate		28.4	%		26.9	%		27.2	%

Summary Of Deferred Tax Assets And Liabilities From Tax Effects Of Temporary Differences

December 31	2012			2011
Deferred tax assets:
Allowance for loan losses	$	36,714		$	35,688
Discount on purchased loans		24,339			19,655
Net operating loss/tax credit carryforwards		15,196			14,353
Deferred compensation		7,429			5,944
Securities impairments		19,999			5,885
Pension and other defined benefit plans		16,335			15,401
Net unrealized securities losses		—			1,868
Other		4,268			3,219
Total		124,280			102,013
Valuation allowance		(16,329	)		(14,980	)
Total deferred tax assets		107,951			87,033
Deferred tax liabilities:
Loan costs		(287	)		(1,807	)
Depreciation		(9,794	)		(9,554	)
Prepaid expenses		(1,083	)		(719	)
Amortizable intangibles		(8,200	)		(8,970	)
Lease financing		(4,915	)		(4,310	)
Other		(1,089	)		(683	)
Total deferred tax liabilities		(25,368	)		(26,043	)
Net deferred tax assets	$	82,583		$	60,990

Summary Of Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits

Year Ended December 31	2012			2011
Balance at beginning of year	$	1,376		$	2,481
Additions based on tax positions related to current year		87			82
Additions based on tax positions of prior year		—			—
Reductions for tax positions of prior years		—			(1,105	)
Reductions due to expiration of statute of limitations		(375	)		(82	)
Balance at end of year	$	1,088		$	1,376