Customer Notes Receivable - Schedule of Changes in Allowances for Credit Losses Related to Customer Notes Receivable (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance at beginning of period	$ 1,091,000	$ 710,000
Provision for current expencted credit loss/Bad debt expense	1,811,000	111,000
Write off of uncollectible accounts	0	(39,000)
Other, net	(1,000)	(24,000)
Balance at end of period	12,136,000	$ 758,000
Provision for expected credit losses	53,000
Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance at beginning of period	$ 9,235,000