XML 12 R26.htm IDEA: XBRL DOCUMENT v3.20.1
Summary of Significant Accounting Policies (Anti-dilutive Shares Excluded from Computation of Diluted Net Income (Loss) per Share) (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from the computation of earnings per share 14,265 23,833
Time-Based Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from the computation of earnings per share 2,208 1,102
Performance-Based Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from the computation of earnings per share 138 138
ESPP [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from the computation of earnings per share 1,346