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Intangible Assets and Goodwill - Future Amortization Expense (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets, weighted average useful life 111 months
2019 (remaining) $ 655
2020 1,346
2021 1,288
2022 1,288
2023 1,288
2024 1,288
Thereafter 4,980
Net intangible assets $ 12,133