Annual report pursuant to Section 13 and 15(d)

Earnings per Share (Narrative) (Details)

v3.20.4
Earnings per Share (Narrative) (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]      
Antidilutive securities excluded from computation of earnings per share, number of shares 1,122,935 405,928 372,516