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(9) Fair Value Measurements (Details - Delinquency status) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
FinanceReceivablesLineItems [Line Items] |  |
Securitization Trust Debt [Member] | $ 1,594,070 | $ 1,505,486
Initial Principal | 1,698,110 | 1,668,076
Financial Asset, 30 to 59 Days Past Due [Member] |  |
FinanceReceivablesLineItems [Line Items] |  |
Initial Principal | 58,534 | 96,296
Financial Asset, 60 to 89 Days Past Due [Member] |  |
FinanceReceivablesLineItems [Line Items] |  |
Initial Principal | 20,114 | 36,436
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
FinanceReceivablesLineItems [Line Items] |  |
Initial Principal | 5,378 | 9,607
Repossessed Vehicles |  |
FinanceReceivablesLineItems [Line Items] |  |
Initial Principal | $ 20,014 | $ 20,251

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