Postretirement Benefit Plans - Company's Asset Allocations for its U.S. Pension Plans by Asset Category (Detail) - United States [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Total	$ 136,744	$ 178,574	$ 175,336
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	72,195	93,821
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	64,549	84,753
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	7,531	10,918
Cash and Cash Equivalents [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	7,531	10,918
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	49,037	62,831
Equity Securities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	49,037	62,831
U.S. Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	21,279	25,083
U.S. Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	21,279	25,083
Non-U.S. Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	9,788	12,544
Non-U.S. Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	9,788	12,544
Employer Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	17,970	25,204
Employer Securities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	17,970	25,204
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	80,176	104,825
Fixed Income Securities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	15,627	20,072
Fixed Income Securities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	64,549	84,753
U.S. Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	51,444	69,073
U.S. Corporate Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	51,444	69,073
U.S. Government and Agency Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	18,255	22,917
U.S. Government and Agency Bonds [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	15,627	20,072
U.S. Government and Agency Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	2,628	2,845
Other Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	10,477	12,835
Other Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	$ 10,477	$ 12,835