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Finance Receivables - Summary of Changes in Allowance for Credit Losses on Finance Receivables (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Beginning balance $ 803 $ 55,031
Effects of adopting fair value option 0 (55,031)
Provisions for credit losses on finance receivables 457 7
Finance receivables charged off (329) 0
Ending balance $ 931 $ 7