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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]  
Current and Deferred Components of Income Tax Expense
The current and deferred components of income tax expense (benefit) were as follows:

For the years ended December 31,
2017
 
2016
 
2015
Federal income tax
 
 
 
 
 
Current
$
4,184,000

 
$
6,276,000

 
$
4,895,000

Deferred
2,083,000

 
(139,000
)
 
332,000

 
6,267,000

 
6,137,000

 
5,227,000

State franchise tax
345,000

 
317,000

 
287,000

 
$
6,612,000

 
$
6,454,000

 
$
5,514,000

Actual Tax Expense from Expected Tax Expense
The actual tax expense differs from the expected tax expense (computed by applying the applicable U.S. Federal corporate income tax rate to income before income taxes) as follows:

For the years ended December 31,
2017
 
2016
 
2015
Expected tax expense
$
9,170,000

 
$
8,562,000

 
$
7,602,000

Non-taxable income
(2,625,000
)
 
(2,176,000
)
 
(2,086,000
)
State franchise tax, net of federal tax benefit
224,000

 
206,000

 
187,000

Equity compensation
(83,000
)
 

 

Tax credits, net of amortization
(88,000
)
 
(105,000
)
 
(185,000
)
Change in federal tax rate
134,000

 

 

Other
(120,000
)
 
(33,000
)
 
(4,000
)
 
$
6,612,000

 
$
6,454,000

 
$
5,514,000

Components of Deferred Tax Assets and Liabilities
Items that give rise to the deferred income tax assets and liabilities and the tax effect of each at December 31, 2017 and 2016 are as follows:

 
2017
 
2016
Allowance for loan losses
$
2,253,000

 
$
3,548,000

OREO
11,000

 
72,000

Accrued pension and post-retirement
1,036,000

 
1,730,000

Goodwill

 
2,000

Unrealized loss on securities transferred from available for sale to held to maturity
46,000

 
70,000

Unrealized loss on securities available for sale
772,000

 
503,000

Restricted stock grants
173,000

 
237,000

Core deposit intangible
15,000

 
20,000

Investment in flow through entities
22,000

 
29,000

Other assets
28,000

 
48,000

Total deferred tax asset
4,356,000

 
6,259,000

Net deferred loan costs
(1,313,000
)
 
(1,895,000
)
Depreciation
(1,306,000
)
 
(1,808,000
)
Goodwill
(39,000
)
 

Mortgage servicing rights
(266,000
)
 
(390,000
)
Unrealized gain on derivative instruments
(410,000
)
 
(626,000
)
Prepaid expense
(821,000
)
 

Total deferred tax liability
(4,155,000
)
 
(4,719,000
)
Net deferred tax asset
$
201,000

 
$
1,540,000