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INCOME TAXES: (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Tax Expense

Income tax expense is summarized as follows:

(Dollar amounts in thousands)		2018				2017				2016
Federal:
Currently payable		$	7,018			$	8,303			$	15,514
Deferred		1,793				3,756				1,326
Expense due to enactment of federal tax reform		—				6,282				—
		8,811				18,341				16,840
State:
Currently payable		1,699				1,818				2,857
Deferred		635				463				186
		2,334				2,281				3,043
TOTAL		$	11,145			$	20,622			$	19,883

Reconciliation of Income Tax Expense

The reconciliation of income tax expense with the amount computed by applying the statutory federal income tax rate of 21% for 2018 (35% for 2017 and 2016) to income before income taxes is summarized as follows:

(Dollar amounts in thousands)		2018				2017				2016
Federal income taxes computed at the statutory rate		$	12,122			$	17,414			$	20,403
Add (deduct) tax effect of:
Tax exempt income		(2,495		)		(4,102		)		(3,992		)
Non-deductible insurance brokerage goodwill		—				—				1,797
ESOP dividend deduction		(103		)		(102		)		(47		)
State tax, net of federal benefit		1,846				1,483				1,978
Affordable housing credits		(148		)		(148		)		(148		)
Expense due to enactment of federal tax reform		—				6,282				—
Other, net		(77		)		(205		)		(108		)
TOTAL		$	11,145			$	20,622			$	19,883

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities at December 31, 2018 and 2017, are as follows: 

(Dollar amounts in thousands)		2018				2017
Deferred tax assets:
Other than temporary impairment		$	761			$	1,829
Net unrealized losses on retirement plans		5,783				6,609
Net unrealized losses on securities available for sale		2,063				—
Loan loss provisions		5,463				5,195
Deferred compensation		2,883				3,661
Compensated absences		576				563
Post-retirement benefits		1,338				1,359
Deferred loss on acquisition		577				663
Other		2,140				2,123
GROSS DEFERRED ASSETS		21,584				22,002
Deferred tax liabilities:
Net unrealized gains on securities available-for-sale		—				(804		)
Depreciation		(2,004		)		(1,989		)
Mortgage servicing rights		(319		)		(308		)
Pensions		(335		)		(201		)
Intangibles		(2,852		)		(2,446		)
Other		(2,614		)		(2,408		)
GROSS DEFERRED LIABILITIES		(8,124		)		(8,156		)
NET DEFERRED TAX ASSETS		$	13,460			$	13,846

Reconciliation of Unrecognized Tax Benefits

Unrecognized Tax Benefits — A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

(Dollar amounts in thousands)		2018				2017				2016
Balance at January 1		$	825			$	698			$	513
Additions based on tax positions related to the current year		174				257				288
Additions based on tax positions related to prior years		—				—				—
Reductions due to the statute of limitations		(77		)		(130		)		(103		)
Balance at December 31		$	922			$	825			$	698

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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