ABG Profit Participation Arrangement - Additional Information (Detail) - USD ($)							1 Months Ended	12 Months Ended
	Jan. 01, 2021	Jul. 01, 2020	Jan. 24, 2020	Jan. 01, 2020	Oct. 01, 2019	Apr. 01, 2019	Jan. 31, 2020	Dec. 31, 2019
Class Of Stock [Line Items]
Obligation to pay the additional consideration								$ (46,914,000)
A And R Profit Participation Agreement [Member]
Class Of Stock [Line Items]
Finance receivables write-offs through impairment of assets							$ 7,011,000
Finance receivable write-off through accumulated deficit							$ 28,900,000
ABG Intermediate Holdings Two LLC [Member] | A And R Profit Participation Agreement [Member]
Class Of Stock [Line Items]
Minimum participation rights with respect to each contract year			$ 10,000,000
ABG Prince Agreement [Member] | Subsequent Event [Member]
Class Of Stock [Line Items]
Quarterly royalty payment in 2021, until maturity in 2025	$ 375,000
Common Stock Class Two | ABG Intermediate Holdings Two LLC [Member] | A And R Profit Participation Agreement [Member]
Class Of Stock [Line Items]
Obligation to pay the additional consideration			$ (83,333,000)
Minimum [Member] | ABG Intermediate Holdings Two LLC [Member] | A And R Profit Participation Agreement [Member]
Class Of Stock [Line Items]
Percentage of participation rights			49.00%
Minimum [Member] | ABG Prince Agreement [Member]
Class Of Stock [Line Items]
Guaranteed minimum royalty payment		$ 500,000		$ 500,000	$ 500,000	$ 500,000