Investment in Loans (Schedule of Consumer Loans: Delinquency Status) (Details) - Consumer loans	Jun. 30, 2023	Dec. 31, 2022
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	87.50%	90.30%
30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	6.30%	4.20%
60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	3.10%	2.30%
90-119 Days or More Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	2.80%	3.10%
Financing Receivables, Equal to Greater than 120 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	0.30%	0.10%