Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 9,164	$ 6,504	$ 19,922	$ 14,337
Other comprehensive income (loss):
Unrealized holding gains (losses) on available for sale securities	2,606	4,695	(3,870)	8,438
Tax effect	(547)	(986)	813	(1,772)
Reclassification of losses recognized in net income	1		2
Pension liability adjustment	81	72	163	145
Tax effect	(17)	(15)	(34)	(31)
Total other comprehensive income (loss)	2,124	3,766	(2,926)	6,780
Comprehensive income	$ 11,288	$ 10,270	$ 16,996	$ 21,117

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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