Contingent Liabilities - Additional Information (Detail) $ in Thousands, tire in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) tire	Dec. 31, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Minimum estimated sale of tires per year | tire	30
Maximum estimated sale of tires per year | tire	35
Estimated number of tires still in use | tire	300
Product liability expenses, minimum	$ 0
Product liability expenses, maximum	33,000
Product liability reserve balance	99,291	$ 95,339
Increase in product liability reserve due to self insured incidents	6,761
Settlement and change reserve estimated liability increase	91
Payments to resolve cases and claims	2,900
Current portion product liability reserve balance	$ 18,398	$ 18,337