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Intangible Assets - Expected Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Intangible Assets      
December 31, 2020 $ 9,460    
December 31, 2021 5,794    
December 31, 2022 4,663    
December 31, 2023 4,054    
December 31, 2024 4,014    
Thereafter 7,603    
Subject to amortization 35,588    
Trademarks 621    
Ending Balance $ 36,209 $ 45,462 $ 37,888