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Lessor Leases - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Lessor, Lease, Description [Line Items]      
Property and equipment, net $ 59,073 $ 54,246  
Accumulated depreciation 106,301 115,715  
Depreciation expense 18,300 17,200 $ 15,100
Leased Equipment under Operating Leases      
Lessor, Lease, Description [Line Items]      
Property and equipment, net 1,400 2,100  
Accumulated depreciation 2,500 1,600  
Depreciation expense $ 600 $ 700 $ 500
Minimum      
Lessor, Lease, Description [Line Items]      
Term of sales-type leases 1 year    
Term of operating leases 1 year    
Maximum      
Lessor, Lease, Description [Line Items]      
Term of sales-type leases 5 years    
Term of operating leases 7 years