XML 40 R30.htm IDEA: XBRL DOCUMENT v3.19.1
Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Receivables [Abstract]    
Balance at beginning of period $ 58,300 $ 48,910
Provision for credit losses 23,343 19,515
Credit losses (26,377) (22,020)
Recoveries 1,134 1,345
Balance at end of period $ 56,400 $ 47,750