Leases - Net Investments in Leases (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Sales-type Leases
Lessor, Lease, Description [Line Items]
Lease receivables	[1]	$ 67,092	$ 68,457
Unguaranteed residual assets		53,577	52,933
Net investment in leases		120,669	121,390
Direct Financing Leases
Lessor, Lease, Description [Line Items]
Lease receivables	[1]	16,499	16,511
Unguaranteed residual assets		0	0
Net investment in leases		$ 16,499	$ 16,511

[1] Current portion of lease receivables included in prepaid and other current assets on the balance sheet.