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Leases - Sales-type Lease Future Undiscounted Cash Flows (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Leases [Abstract]  
2020 $ 4,264
2021 3,285
2022 2,171
2023 1,435
2024 562
Total undiscounted cash flows 11,717
Present value of lease payments 10,302
Difference between undiscounted cash flows and discounted cash flows $ 1,415