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Acquisition and Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Acquisition and Goodwill [Abstract]        
Acquisition $ 101,000 $ 0 $ 100,960 $ 0
Goodwill   16,400 $ 16,400  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets   $ 84,600