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 |