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Restructuring - Narrative (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 02, 2020
Dec. 17, 2019
Jan. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Restructuring Cost and Reserve [Line Items]              
Restructuring         $ 128 $ 28 $ 262
Proceeds from sale of common stock     $ 2,300        
Reverse stock split ratio 0.2         0.2  
Maximum              
Restructuring Cost and Reserve [Line Items]              
Reverse stock split ratio   0.5          
Facility Closing | 2017 Restructuring Plan              
Restructuring Cost and Reserve [Line Items]              
Restructuring       $ 14