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Consolidated Statement of Changes in Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statement of Changes in Comprehensive Income [Abstract]
Net income	$ 19,490	$ 18,034	$ 13,025
Securities available for sale
Unrealized holding gain (loss) during the period	4,155	(913)	(1,283)
Income tax (benefit)	872	(193)	(436)
Securities available for sale	3,283	(720)	(847)
Reclassification adjustment for (gains) losses included in income	(24)	19	(1,035)
Income tax (benefit)	(4)	4	(352)
Reclassification	(20)	15	(683)
Change in unrecognized pension costs	36	229	127
Income tax (benefit)	7	48	44
Subtotal	29	181	83
Net other comprehensive income (loss)	3,292	(524)	(1,447)
Comprehensive income	$ 22,782	$ 17,510	$ 11,578

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