Notes Receivable and Current Expected Credit Losses - Schedule Allowance for Credit Losses on Financing Receivables (Details) - USD ($)	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Funded
Beginning balance	$ 1,472,000	$ 1,292,000
Unrealized credit loss provision (release)	210,000	412,000
Release due to redemption	0	(465,000)
Ending balance	1,682,000	1,239,000
Unfunded
Beginning balance	732,000	338,000
Unrealized credit loss provision (release)	(355,000)	231,000
Release due to redemption	0	0
Ending balance	377,000	569,000
Total
Beginning balance	2,204,000	1,630,000
Unrealized credit loss provision (release)	(145,000)	643,000
Release due to redemption	0	465,000
Ending balance	$ 2,059,000	$ 1,808,000