Notes Receivable (Schedule of Lines of Credit) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Maximum Obligation	$ 77,350
Long-term line of credit	54,427	$ 53,269
Greenleaf
Line of Credit Facility [Line Items]
Maximum Obligation	31,200
Long-term line of credit	$ 29,085	22,569
Greenleaf | Minimum
Line of Credit Facility [Line Items]
Interest Rate	3.25%
Greenleaf | Maximum
Line of Credit Facility [Line Items]
Interest Rate	4.75%
CWG
Line of Credit Facility [Line Items]
Maximum Obligation	$ 12,000
Interest Rate	8.00%
Long-term line of credit	$ 9,767	9,152
CCF
Line of Credit Facility [Line Items]
Maximum Obligation	$ 12,500
Interest Rate	18.00%
Long-term line of credit	$ 0	7,152
PATC
Line of Credit Facility [Line Items]
Maximum Obligation	$ 4,650
Interest Rate	15.00%
Long-term line of credit	$ 4,650	4,650
PCMV
Line of Credit Facility [Line Items]
Maximum Obligation	$ 9,000
Interest Rate	15.00%
Long-term line of credit	$ 6,594	5,758
Health Circle
Line of Credit Facility [Line Items]
Maximum Obligation	$ 8,000
Interest Rate	15.00%
Long-term line of credit	$ 4,331	$ 3,988