Benefit Plans - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Retirement Benefits [Abstract]
Service cost	$ 546,000	$ 623,000	$ 1,086,000	$ 1,239,000
Periodic pension income			3,500,000	$ 2,500,000
Expected voluntary contribution for the year 2021			$ 0