XML 41 R30.htm IDEA: XBRL DOCUMENT v3.21.1
General - Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Restricted Stock and Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive restricted common stock units excluded from computation of earnings per share (in shares) 8,579 17,573