Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 558	$ 567	$ 477
Interest cost	1,573	1,431	1,692
Expected loss on plan assets	(3,756)	(3,656)	(3,291)
Amortization of net actuarial loss	817	1,269	1,176
Net periodic benefit (income) cost	(808)	(389)	54
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	123	143	109
Interest cost	96	85	96
Expected loss on plan assets	0	0	0
Amortization of net actuarial loss	56	47	26
Net periodic benefit (income) cost	$ 275	$ 275	$ 231