XML 68 R57.htm IDEA: XBRL DOCUMENT v3.20.2
Equity and Stock-Based Compensation (Preferred Stock Dividends) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Series D Preferred Stock        
Class of Stock [Line Items]        
Series D Cumulative Preferred Stock $ 825,000 $ 825,000 $ 2,475,000 $ 2,475,000