Retirement Plans and Other Postretirement Benefits - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected long-term rate of return	6.50%
Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	60.00%
Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	40.00%
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense	$ 112	$ 224	$ 134
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year	$ 156
Defined benefit plan, expected long-term rate of return	6.50%	6.50%
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year	$ 127
Defined benefit plan, expected long-term rate of return	0.00%	0.00%
Deferred Salary Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 1,800		$ 1,500