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Net Income (Loss) Per Share - Summary of Potentially Dilutive Securities (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities not included in the calculation of diluted net loss per share 1,262 519
Stock Options and Restricted Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities not included in the calculation of diluted net loss per share 1,211 468
Warrants outstanding    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities not included in the calculation of diluted net loss per share 51 51