Employee Benefit Plans (Deferred Compensation Plans) - Fair Value of Assets Held by Trust and Amounts Payable to Plan Participants (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Long-term Investments	$ 26,935	$ 23,891
Amounts Payable to Plan Participants Deferred Compensation Liability	31,383	25,866
Deferred Compensation Liability [Member]
Defined Benefit Plan Disclosure [Line Items]
Amounts Payable to Plan Participants Deferred Compensation Liability	31,383	25,866
Long Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-term Investments	$ 26,935	$ 23,891