Lessor Leases - Income Recognized from Sales-Type Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Sales-type lease revenues	$ 21,887	$ 26,040	$ 37,175
Cost of sales-type lease revenues	(8,918)	(10,624)	(14,985)
Selling profit on sales-type lease revenues	12,969	15,416	22,190
Interest income on sales-type lease receivables	$ 1,869	$ 1,933	$ 1,756