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Intangible Assets, Net and Goodwill - Schedule of future amortization expense of intangible assets (Details)
$ in Thousands
Sep. 30, 2018
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 $ 1,626
2020 1,446
2021 1,446
2022 1,446
2023 1,446
Thereafter 11,088
Total $ 18,498