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Restructuring - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]    
Restructuring   $ 134
Proceeds from the Issuance of Common Stock and Warrants, Net of Issuance Costs $ 2,300  
Facility Closing [Member] | 2017 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Restructuring $ (14)