XML 37 R26.htm IDEA: XBRL DOCUMENT v3.21.2
Significant Accounting Policies - Net Loss Per Common Share (Details) - shares
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Stock options and restricted stock units    
Anti-dilutive securities excluded from computation of earnings per share    
Anti-dilutive securities 6,596,390 6,429,701