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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
Sep. 30, 2020
Dec. 31, 2019
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 175,000 385,000
Preferred stock, shares outstanding (in shares) 175,000 385,000
Common stock, par value (in dollars per share) $ 0.50 $ 0.50
Common stock, shares authorized (in shares) 400,000,000 400,000,000
Common stock, shares issued (in shares) 232,421,385 190,006,776
Common stock, shares outstanding (in shares) 232,421,385 190,006,776
Series A 10% Convertible Preferred Stock    
Preferred stock, dividend rate 10.00% 10.00%
Series B 10% Convertible Preferred Stock    
Preferred stock, dividend rate 10.00% 10.00%