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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Jan. 17, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 28, 2019	Dec. 31, 2018
5.0% Exchangeable Senior Notes due March 2021 [Member] \| Exchangeable Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	5.00%	5.00%	5.00%	5.00%
Due date	Mar. 01, 2021		Mar. 01, 2021
Aggregate principal amount	$ 86,250
Debt issuance costs paid	$ 5,902	$ 5,902
Principal Repurchase Amount Of 2021 Notes					$ 920	$ 1,590
Other Asset Class [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets fair value on non-recurring basis		0	$ 0
Liabilities fair value on non-recurring basis		$ 0	$ 0