Receivables and Allowance for Credit Losses - Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Notes Receivable and Allowance for Losses [Line Items]
2023	$ 3,493
2022	215
2021	3,286
2020	903
2019	29,291
Prior	73,758
Total	110,946	$ 118,215
Senior
Notes Receivable and Allowance for Losses [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	29,083
Prior	57,291
Total	86,374	95,466
Subordinated
Notes Receivable and Allowance for Losses [Line Items]
2023	3,493
2022	0
2021	1,994
2020	0
2019	0
Prior	14,105
Total	19,592	17,075
Unsecured
Notes Receivable and Allowance for Losses [Line Items]
2023	0
2022	215
2021	1,292
2020	903
2019	208
Prior	2,362
Total	$ 4,980	$ 5,674