v3.21.2

Stock-Based Compensation - Additional Information (Detail) - $ / shares			3 Months Ended		9 Months Ended
	Mar. 01, 2021	Aug. 04, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of restricted stock			1,000	341,000	202,000	341,000
Weighted average grant date fair value per share			$ 26.02	$ 20.50	$ 18.68	$ 20.50
Unvested shares			374,000	341,000	374,000	341,000	378,000	341,000	0	0
Performance-based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of restricted stock			0		132,000
Weighted average grant date fair value per share			$ 0		$ 24.40
Number of restricted stock									0
Unvested shares			110,000		110,000		110,000	0
2020 Equity Incentive Plan | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of restricted stock	199,000	341,000
2020 Equity Incentive Plan | Determined Share Value
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value per share	$ 18.66	$ 20.50
2020 Equity Incentive Plan | Performance-based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of restricted stock	132,000
Non-vested share awards percentage	50.00%
Vesting percentage payout schedule can produce	100.00%
Performance period	3 years
Percentage as rTSR of peer group	55.00%
2020 Equity Incentive Plan | Performance-based Restricted Stock Units | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage payout schedule can produce	0.00%
2020 Equity Incentive Plan | Performance-based Restricted Stock Units | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage payout schedule can produce	200.00%
2020 Equity Incentive Plan | Tranche One | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	1 year
2020 Equity Incentive Plan | Tranche Two | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	3 years
2020 Equity Incentive Plan | Tranche Three | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	4 years

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