Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense (Benefit)

Income tax expense (benefit) for the years ended December 31 is comprised of:

(dollars in thousands)	2015			2014		2013
Current	$	24,825		$	15,979	$	16,836
Deferred	(427		)	1,536		(2,358		)
Total	$	24,398		$	17,515	$	14,478

Schedule of Statutory to Effective Tax Rate Reconciliation

The statutory to effective tax rate reconciliation for the years ended December 31 is as follows:

	2015		2014		2013
Statutory tax rate	35.0	%	35.0	%	35.0	%
Low income housing tax credits	(4.4	)%	(5.8	)%	(6.8	)%
Tax-exempt interest	(4.1	)%	(4.6	)%	(4.5	)%
Bank owned life insurance	(0.8	)%	(0.8	)%	(1.0	)%
Other	1.0	%	(0.6	)%	(0.4	)%
Effective Tax Rate	26.7	%	23.2	%	22.3	%

Schedule of Significant Components of Temporary Differences with Deferred Tax Assets and Liabilities

Significant components of our temporary differences were as follows at December 31:

(dollars in thousands)	2015			2014
Deferred Tax Liabilities:
Net unrealized holding gains on securities available-for-sale	$	(3,563	)	$	(3,783	)
Prepaid pension	(2,865		)	(3,472		)
Deferred loan income	(2,847		)	(2,165		)
Purchase accounting adjustments	—			(631		)
Depreciation on premises and equipment	(1,226		)	(1,590		)
Other	(809		)	(812		)
Total Deferred Tax liabilities	(11,310		)	(12,453		)
Deferred Tax Assets:
Allowance for loan losses	17,740			17,567
Purchase accounting adjustments	1,298			—
Other employee benefits	2,556			2,453
Low income housing partnerships	4,531			4,049
Net adjustment to funded status of pension	12,425			11,089
Impairment of securities	1,354			1,313
State net operating loss carryforwards	2,670			2,249
Other	6,155			4,668
Gross Deferred Tax Assets	48,729			43,388
Less: Valuation allowance	(2,670		)	(2,249		)
Total Deferred Tax Assets	46,059			41,139
Net Deferred Tax Asset	$	34,749		$	28,686

Schedule of Reconciliation of Change in Federal and State Gross Unrecognized Tax Benefits

The following table reconciles the change in Federal and State gross unrecognized tax benefits, or UTB, for the years ended December 31:

(dollars in thousands)	2015		2014			2013
Balance at beginning of year	$	284	$	1,902		$	978
Prior period tax positions
Increase	818		55			924
Decrease	—		(1,673		)	—
Current period tax positions	—		—			—
Reductions for statute of limitations expirations	—		—			—
Balance at End of Year	$	1,102	$	284		$	1,902
Amount That Would Impact the Effective Tax Rate if Recognized	$	542	$	184		$	148