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Stockholders' Equity - Schedule of Public Offering of Common Stock (Details) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 29, 2020 | Jan. 31, 2020 | Sep. 30, 2020 | Sep. 30, 2019
Class of Stock [Line Items] |  |  |  |
Net Proceeds |  |  | $ 511,924 | $ 632,248
Underwritten Public Offering | Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares Issued (in shares) | 50,600,000 | 34,500,000 |  |
Net Proceeds | $ 305,274 | $ 206,650 |  |

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