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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]  
Schedule of Income Tax Expense (Benefit)
(dollars in thousands)
2014

2013

2012

Current
$
15,979

$
16,836

$
6,223

Deferred
1,536

(2,358
)
1,038

Total
$
17,515

$
14,478

$
7,261

Schedule of Statutory to Effective Tax Rate Reconciliation
 
2014

2013

2012

Statutory tax rate
35.0
 %
35.0
 %
35.0
 %
Low income housing tax credits
(5.8
)%
(6.8
)%
(10.5
)%
Tax-exempt interest
(4.6
)%
(4.5
)%
(6.7
)%
Bank owned life insurance
(0.8
)%
(1.0
)%
(1.2
)%
Other
(0.6
)%
(0.4
)%
0.9
 %
Effective Tax Rate
23.2
 %
22.3
 %
17.5
 %
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)
2014

2013

Deferred Tax Liabilities:
 
 
Net unrealized holding gains on securities available-for-sale
$
(3,783
)
$

Prepaid pension
(3,472
)
(3,730
)
Deferred loan income
(2,165
)
(1,614
)
Purchase accounting adjustments
(631
)
(801
)
Depreciation on premises and equipment
(1,590
)
(1,061
)
Other
(812
)
(823
)
Total Deferred Tax liabilities
(12,453
)
(8,029
)
Deferred Tax Assets:
 
 
Net unrealized holding losses on securities available-for-sale

361

Allowance for loan losses
17,567

18,890

Other employee benefits
2,453

2,369

Low income housing partnerships
4,049

3,147

Net adjustment to funded status of pension
11,089

6,495

Impairment of securities
1,313

1,313

Delinquent interest on nonaccrual loans

1,626

State net operating loss carryforwards
2,249

1,828

Other
4,668

3,950

Gross Deferred Tax Assets
43,388

39,979

Less: Valuation allowance
(2,249
)
(2,199
)
Total Deferred Tax Assets
41,139

37,780

Net Deferred Tax Asset
$
28,686

$
29,751

Schedule of Reconciliation of Change in Federal and State Gross Unrecognized Tax Benefits
A reconciliation of the change in Federal and State gross unrecognized tax benefits, or UTB, for the years ended December 31:
(dollars in thousands)
2014
2013
2012
Balance at beginning of year
$
1,902

$
978

$
200

Prior period tax positions
 
 
 
Increase
55

924


Decrease
(1,673
)


Current period tax positions


913

Reductions for statute of limitations expirations


(135
)
Balance at End of Year
$
284

$
1,902

$
978

Amount That Would Affect the Effective Tax Rate if Recognized
$
184

$
148

$
147