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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 90,000,000 | 90,000,000
Common stock, shares issued (in shares) | 43,034,000 | 42,686,000
Common stock, shares outstanding (in shares) | 43,034,000 | 42,686,000
Series D Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 0.01 |
Preferred stock, shares authorized (in shares) | 65,000 |
Preferred stock, shares issued (in shares) | 65,000 |
Preferred stock, shares outstanding (in shares) | 65,000 |
Perpetual and convertible preferred stock | $ 49,069 | $ 0
Series B Preferred Stock |  |
Preferred stock, par value (in dollars per share) |  | $ 0.01
Preferred stock, shares authorized (in shares) |  | 100,000
Preferred stock, shares issued (in shares) |  | 100,000
Preferred stock, shares outstanding (in shares) |  | 100,000
Perpetual and convertible preferred stock | $ 0 | $ 105,086

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