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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]      
Useful life 7 years    
Goodwill $ 115,000    
Goodwill impairment 0    
Amortization expense (de minimis for 2019) $ 3,000 $ 0 $ 1,000