Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Share (Details)

Net Loss per Share (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Shares Issuable Under the Equity Incentive Plan [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total shares excluded as anti-dilutive (shares) 5,497 5,071