Investment in Loans (Schedule of Consumer Loans: Delinquency Status) (Details) - Consumer loans |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 100.00% | 100.00% |
| Financial Asset, 1 to 29 Days Past Due [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 96.70% | 90.40% |
| 30 to 59 Days Past Due [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 1.40% | 3.40% |
| 60 to 89 Days Past Due [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 1.00% | 3.30% |
| 90-119 Days or More Past Due [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 0.90% | 2.80% |
| Financing Receivables, Equal to Greater than 120 Days Past Due [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Percent past due | 0.00% | 0.10% |