Defined Contribution Plan, Pension and Other Post-Retirement Benefit Plans - Fair Value of Pension Plan Assets Measured Using Significant Unobservable Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Change in plan assets:
Fair value of plan assets — Beginning of the year	$ 81,113
Fair value of plan assets at end of the year	79,842	$ 81,113
Level 3
Change in plan assets:
Fair value of plan assets — Beginning of the year	4,088	4,070
Actual return on assets held at reporting date	0	18
Purchases, sales and settlements, net	(4,088)	0
Fair value of plan assets at end of the year	$ 0	$ 4,088