XML 86 R76.htm IDEA: XBRL DOCUMENT v3.20.2
Earnings Per Common Share, Additional Information (Details) - shares
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Options to purchase common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Options excluded from computation of earnings per share (in shares) 0 0