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Equity - Issuance of Common Stock (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2017
Issuance of Common Stock |  |
Net proceeds from issuance of common shares |  | $ 705,012
Common stock |  |
Issuance of Common Stock |  |
Shares issued | 11,850,000 |
Underwriting discounts and offering costs | $ 29,800 |
Net proceeds from issuance of common shares | $ 704,900 |

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