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Leases - Future Scheduled Customer Payments (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Capital Leases, Future Minimum Payments Receivable, Fiscal Year Maturity [Abstract]  
2020 $ 5,108
2021 5,428
2022 5,784
2023 6,155
2024 6,567
Thereafter $ 25,923