XML 82 R71.htm IDEA: XBRL DOCUMENT v3.21.2
Earnings Per Common Share - Additional Information (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Earnings Per Share [Abstract]        
Add: Dilutive effects of performance based-shares (in shares) 0 0 0 0