Annual report pursuant to Section 13 and 15(d)

Net (Loss) Income Per Share Available to Common Stockholders - Outstanding Securities Considered Anti-Dilutive (Details)

v3.10.0.1
Net (Loss) Income Per Share Available to Common Stockholders - Outstanding Securities Considered Anti-Dilutive (Details) - shares
shares in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 6,708 4,818
Convertible Preferred Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 5,048 4,372
Common Stock Options and RSUs [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 1,639 346
Warrants for Common Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 21 100