Leases Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessor, Lease, Description [Line Items]
Lease receivables	$ 199,760
Lease expense	6,800
Amounts included in measurement of lease liabilities	6,700
Amount to obtain ROU assets	$ 5,200
Term of options to extend leases	12 months
Term for option to terminate leases	1 year
Interest income for sales-type and direct finance leases	$ 2,000
Minimum
Lessor, Lease, Description [Line Items]
Term of contract on operating lease	1 year
Remaining lease terms on sales type and direct finance leases	4 years
Maximum
Lessor, Lease, Description [Line Items]
Term of contract on operating lease	45 years
Remaining lease terms on sales type and direct finance leases	20 years