Retirement Plans - Periodic Pension Cost, Next Fiscal Year (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 1,005	$ 1,144
Estimated 2021 net periodic pension cost		$ 1,293	$ 1,353
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 823
Amortization of actuarial loss	387
Estimated 2021 net periodic pension cost	$ 1,210