Loans Receivable and Allowance for Loan Losses (Schedule of Impaired Loans by Class) (Details) - Church Loans [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance, Total	$ 14,081	$ 14,362
Recorded Balance, Total	13,924	13,601
Recorded Investment, Total	13,824	13,110
Related Allowance	175	1,463
Average Recorded Investment, Total	14,579	13,421
Interest Income Recognized, Total	1,202	133
Wholly-Owned First [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance, With no allowance recorded	12,497	5,734
Unpaid Principal Balance, With an allowance recorded	290	4,818
Recorded Balance, With no allowance recorded	12,404	5,687
Recorded Balance, With an allowance recorded	290	4,142
Recorded Investment, With no allowance recorded	12,304	5,694
Recorded Investment, With an allowance recorded	290	3,632
Related Allowance	110	1,165
Average Recorded Investment, With no allowance recorded	12,343	5,915
Average Recorded Investment, With an allowance recorded	973	3,714
Interest Income Recognized, With no allowance recorded	1,202	123
Wholly-Owned Junior [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance, With an allowance recorded		215
Recorded Balance, With an allowance recorded		187
Recorded Investment, With an allowance recorded		176
Related Allowance		176
Average Recorded Investment, With an allowance recorded		181
Participation First [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance, With no allowance recorded		2,293
Unpaid Principal Balance, With an allowance recorded	1,294	1,302
Recorded Balance, With no allowance recorded		2,293
Recorded Balance, With an allowance recorded	1,230	1,292
Recorded Investment, With no allowance recorded		2,316
Recorded Investment, With an allowance recorded	1,230	1,292
Related Allowance	65	122
Average Recorded Investment, With no allowance recorded		2,312
Average Recorded Investment, With an allowance recorded	$ 1,263	1,299
Interest Income Recognized, With an allowance recorded		$ 10

Impaired Financing Receivable, Net Loan Principal Balance, Before Discount

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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