Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Actuarially determined long-term liability adjustments, net of tax	$ 274	$ 274	$ 274			$ 508
Interest rate hedge, tax	0			$ (89)	$ 75	$ 130
OCI, debt securities, available-for-sale, gain (loss), after adjustment, tax	$ 2	$ 77	$ (64)	$ 0
Stock repurchased and retired during period, shares	1,547,846	1,225,134	1,207,409
Dividends declared per common share (in dollars per share)	$ 0	$ 1.10	$ 1.10	$ 1.00
Actuarially determined long-term liability adjustments, net of tax				$ 508	$ 508