Investment in Loans (Schedule of Consumer Loans: Delinquency Status) (Details) - Consumer loans	Sep. 30, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Percent past due	100.00%
Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Percent past due	94.50%
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Percent past due	2.40%
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Percent past due	1.70%
90-119 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Percent past due	1.40%