Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Stockholders’ equity:    
Preferred stock, par value (in USD per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares issued 6,900,000 6,900,000
Preferred stock, shares outstanding 6,900,000 6,900,000
Common stock, par value per share (in USD per share) $ 0.05 $ 0.05
Common stock, shares authorized 350,000,000 350,000,000
Common stock, shares issued 136,341,685 127,699,235
Common stock, shares outstanding 136,341,685 127,699,235