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Schedule I - Condensed Financial Information of Registrant - Balance Sheets (Parenthetical) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Condensed Balance Sheet Statements |  |
Common stock, par value | $ 0.001 | $ 0.001
Common stock, shares authorized | 1,000,000 | 700,000
Common stock, shares issued | 162,347 | 140,222
Common stock, shares outstanding | 162,297 | 125,074
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 100,000 | 61,006
Preferred stock, shares issued | 0 | 61,006
Preferred stock, shares outstanding | 0 | 61,006
Preferred stock, liquidation value |  | $ 350,000
Treasury stock, shares | 50 | 15,146
Parent Company | Reportable Legal Entities |  |
Condensed Balance Sheet Statements |  |
Common stock, par value | $ 0.001 | $ 0.001
Common stock, shares authorized | 1,000,000 | 700,000
Common stock, shares issued | 162,347 | 140,222
Common stock, shares outstanding | 162,297 | 125,074
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 100,000 | 61,006
Preferred stock, shares issued | 0 | 61,006
Preferred stock, shares outstanding | 0 | 61,006
Preferred stock, liquidation value |  | $ 350,000
Treasury stock, shares | 50 | 15,146

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