XML 51 R39.htm IDEA: XBRL DOCUMENT v3.21.2
Earnings Per Share (Narrative) (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Earnings Per Share [Abstract]        
Convertible Preferred Stock, Shares Issuable upon Conversion     the Company’s shares of Series N preferred shares, each of which is convertible to 40 common shares, have the right to receive dividends or dividend equivalents should the Company declare dividends on its common stock.  
Series N preferred stock, each convertible to common shares 40   40  
Anti-dilutive common shares 400,000 100,000 400,000 100,000