Notes Receivable, Net (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019
Notes receivable, maturity date description	have maturity dates ranging from 2020 to 2022
Minimum [Member]
Notes receivable term	24 months
Notes receivable interest rate	11.55%
Maximum [Member]
Notes receivable term	42 months
Notes receivable interest rate	16.49%