Financial Instruments - Credit Losses - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Notes receivable, net	$ 60,873		$ 57,495
Uncollectible balance reserved (as a percent)	100.00%
Uncollectible balance period (in years)	5 years
Uncollected balance of defaulted notes	$ 6,236
Allowance for credit loss	3,814	$ 4,051	$ 4,327	$ 5,106	$ 5,247	$ 4,923
Notes Receivable, Five Years and Older
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit loss	2,200
Notes Receivable, Under Five Years
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit loss	$ 1,600
Minimum | Notes Receivable
Financing Receivable, Credit Quality Indicator [Line Items]
Service period (in years)	3 years
Maximum | Notes Receivable
Financing Receivable, Credit Quality Indicator [Line Items]
Service period (in years)	10 years