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Restructuring Costs - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended 26 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2019
Restructuring Cost And Reserve [Line Items]        
Restructuring costs $ (66) $ 3,525 $ 1,785  
Accrued Expenses And Other Current Liabilities        
Restructuring Cost And Reserve [Line Items]        
Balances recorded in accrued expenses and other current liabilities   600    
Other Non-Current Liabilities        
Restructuring Cost And Reserve [Line Items]        
Balances recorded in other non-current liabilities   300    
November 2017 Restructuring Plan        
Restructuring Cost And Reserve [Line Items]        
Restructuring costs   $ 3,500 $ 1,700 $ 5,100
Restructuring cost reversed $ (100)