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Goodwill and Other Intangible Assets - Schedule of future annual amortization expense of amortizable intangible assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2020 $ 6,313  
2021 23,507  
2022 23,507  
2023 23,507  
2024 23,507  
Thereafter 93,932  
Total Amortizable Intangibles, Net $ 194,273 $ 213,210