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Derivative Warrants - Narrative (Details)
Aug. 07, 2017
warrant
$ / shares
Mar. 31, 2020
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Equity [Abstract]      
Plan of reorganization, number of warrants Issued | warrant 118,137    
Par value of successor common stock (USD per share) $ 0.01 $ 0.01 $ 0.01
Exercise price of warrants (in USD per warrant) $ 39.82    
Expiration term 7 years    
Derivative warrant liability | $     $ 354