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Other Assets - Summary of Other Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid expenses $ 2,561 $ 1,798
Card payments receivable 725 163
Repossessed assets 502 307
Credit insurance receivable 436 658
Other 558 241
Total $ 4,782 $ 3,167