Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Components of the provision for income taxes

Significant components of the provision for income taxes (benefits) are as follows for the periods presented:

	Year Ended December 31,
	2013			2012			2011
Current
Federal	$	12,092		$	24,512		$	10,655
State	452			432			886
	12,544			24,944			11,541
Deferred
Federal	(169		)	(16,093		)	(2,300		)
State	(116		)	(2,023		)	(198		)
	(285		)	(18,116		)	(2,498		)
	$	12,259		$	6,828		$	9,043

Reconciliation of income taxes computed at the United States federal statutory tax rates

The reconciliation of income taxes computed at the United States federal statutory tax rates to the provision for income taxes is as follows:

	Year Ended December 31,
	2013			2012			2011
Tax at U.S. statutory rate	$	16,011		$	11,713		$	12,136
Increase (decrease) in taxes resulting from:
Tax-exempt interest income	(2,765		)	(2,825		)	(2,831		)
BOLI income	(1,430		)	(1,179		)	(988		)
Investment tax credits	(1,063		)	(921		)	(199		)
Amortization of investment in low-income housing tax credits	998			2,083			—
State income tax (benefit) expense, net of federal benefit	383			(775		)	9
Decrease to valuation allowance	(164		)	(816		)	(61		)
Other items, net	289			(452		)	977
	$	12,259		$	6,828		$	9,043

Significant components of the Company's deferred tax assets and liabilities

Significant components of the Company’s deferred tax assets and liabilities at December 31, 2013 and 2012 are as follows for the periods presented:

	2013			2012
Deferred tax assets
Allowance for loan losses	$	26,128		$	20,207
Purchase accounting adjustments	15,236			7,850
Deferred compensation	9,755			9,108
Net unrealized losses on securities	5,470			28
Impairment of assets	5,450			4,821
State net operating loss carryforwards	557			317
Other	7,175			6,555
Gross deferred tax assets	69,771			48,886
Valuation allowance on state net operating loss carryforwards	(152		)	(317		)
Total deferred tax assets	69,619			48,569
Deferred tax liabilities
Basis difference in acquired assets	6,900			12,196
Investment in partnerships	2,469			2,943
Core deposit intangible	604			1,056
Depreciation	2,644			2,870
Other	2,316			459
Total deferred tax liabilities	14,933			19,524
Net deferred tax assets	$	54,686		$	29,045

Reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding

A reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest, related to federal and state income tax matters as of December 31 is as follows:

	2013		2012		2011
Balance at January 1	$	1,723	$	1,423	$	1,801
Additions based on positions related to current period	455		300		469
Additions based on positions related to prior period	—		—		—
Reductions based on positions related to prior period	—		—		—
Settlements	—		—		(716		)
Reductions due to lapse of statute of limitations	—		—		(131		)
Balance at December 31	$	2,178	$	1,723	$	1,423