Defined Contribution Plan, Pension and Other Post-Retirement Benefit Plans - Fair Values of Pension Plan Assets by Asset Category and by Level (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	$ 79,842	$ 81,113
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	9,192	2,125
U.S. large value
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		2,525
U.S. large growth
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		2,741
International blend
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		5,253
Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		1,717
Balanced
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	20,239	18,958
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	37,117	40,485
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	13,294	3,221
U.S. property
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		4,088
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	442	9,108
Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	442	2,125
Level 1 | U.S. large value
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		2,525
Level 1 | U.S. large growth
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		2,741
Level 1 | International blend
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 1 | Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		1,717
Level 1 | Balanced
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	0	0
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	0	0
Level 1 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	0	0
Level 1 | U.S. property
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	32,452	67,917
Level 2 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	0	0
Level 2 | U.S. large value
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 2 | U.S. large growth
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 2 | International blend
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		5,253
Level 2 | Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 2 | Balanced
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		18,958
Level 2 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	22,361	40,485
Level 2 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	10,091	3,221
Level 2 | U.S. property
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	0	4,088	$ 4,070
Level 3 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | U.S. large value
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | U.S. large growth
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | International blend
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | Balanced
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		0
Level 3 | U.S. property
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets		$ 4,088
Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	46,948
Net Asset Value Per Share | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	8,750
Net Asset Value Per Share | Balanced
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	20,239
Net Asset Value Per Share | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	14,756
Net Asset Value Per Share | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plans assets	$ 3,203