Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net actuarial gain (loss) arising in period, tax expense (benefit)	$ (894)	$ 2,661	$ (265)
Amortization of prior service cost included in pension expense, tax	3	4	3
Amortization of actuarial loss included in pension expense, tax	$ 599	$ 1,157	$ 1,089