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Finance Receivables - Additional Information (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Accrual period for financing receivables 60 days  
Aggregate unpaid principal balance $ 402,571 $ 332,244
Fair value of receivables [1] 458,065 383,890
Finance receivables in non-accrual status $ 1,400 100
Recency delinquency    
Accrual period for financing receivables 60 days  
Contractual delinquency    
Accrual period for financing receivables 90 days  
90+ days    
Aggregate unpaid principal balance $ 14,000 10,500
Fair value of receivables $ 2,200 $ 1,500
[1] (1) Includes amounts in consolidated variable interest entities ("VIEs") presented separately in the table below.