Investment in Loans (Schedule of Consumer Loans: Delinquency Status) (Details) - Consumer loans	Dec. 31, 2022	Dec. 31, 2021
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	90.30%	96.00%
30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	4.20%	1.70%
60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	2.30%	1.30%
90-119 Days or More Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	3.10%	1.00%
Financing Receivables, Equal to Greater than 120 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Percent past due	0.10%	0.00%