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Leases - Future Minimum Lease Obligations Before Adoption of 842 (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
2019 $ 13,337
2020 11,515
2021 10,557
2022 10,293
2023 8,752
Thereafter 53,945
Total minimum payments $ 108,399