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Issuances of Common Stock - Issuance of Common Stock in an Overnight Offering (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2021 | Mar. 31, 2020 | May 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Issuance of Common Stock |  |  |  |  |  |
Proceeds from shares issuances, net |  |  |  | $ 728,883 | $ 845,061 | $ 0
Common stock | Underwritten Public Offering |  |  |  |  |  |
Issuance of Common Stock |  |  |  |  |  |
Shares of common stock issued (in shares) |  | 9,690,500 | 12,650,000 |  |  | 0
Proceeds from shares issuances, net |  | $ 728,900 | $ 845,400 |  |  |
Common stock | Underwritten Public Offering | Subsequent event |  |  |  |  |  |
Issuance of Common Stock |  |  |  |  |  |
Shares of common stock issued (in shares) | 12,075,000 |  |  |  |  |
Proceeds from shares issuances, net | $ 669,600 |  |  |  |  |
Common stock | Underwriter Option |  |  |  |  |  |
Issuance of Common Stock |  |  |  |  |  |
Shares of common stock issued (in shares) |  | 690,500 |  |  |  |
Common stock | Underwriter Option | Subsequent event |  |  |  |  |  |
Issuance of Common Stock |  |  |  |  |  |
Shares of common stock issued (in shares) | 1,575,000 |  |  |  |  |

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