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NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Changes in Impairment Allowance (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Transfers and Servicing [Abstract]        
Balance at beginning of period $ 39 $ 50 $ 73 $ 30
Temporary impairment charges 163 54 301 78
OTTI of servicing assets 0 0 (77) 0
Recoveries 0 (1) (95) (5)
Balance at end of period $ 202 $ 103 $ 202 $ 103