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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Consolidated Statements of Comprehensive Income    
Net income $ 19,222 $ 19,504
Unrealized holding gains on available-for-sale debt securities 10,504 9,920
Reclassification adjustment for gains realized in income (169) (23)
Other comprehensive income on available-for-sale debt securities 10,335 9,897
Changes from plan amendments and actuarial gains and losses (49) 87
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost (29) (32)
Other comprehensive (loss) income on unfunded retirement obligations (78) 55
Other comprehensive income before income tax 10,257 9,952
Income tax related to other comprehensive income (2,153) (2,091)
Net other comprehensive income 8,104 7,861
Comprehensive income $ 27,326 $ 27,365