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Income Taxes Reconciliation of Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Anticipated income tax expense	$ 5,684	$ 10,595	$ 9,734
State income taxes, net of federal income tax benefit	101	46	53
Tax-exempt interest income, net of amortization	(1,026)	(1,298)	(1,075)
Tax Cuts and Jobs Act	0	(5,342)	0
Other, net	451	569	(96)
Provision for income taxes	$ 5,210	$ 4,570	$ 8,616
U.S. Federal statutory income tax rate	21.00%	35.00%	34.60%

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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