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Stockholders' Equity (Narrative) (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 06, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | [1] | Dec. 31, 2019 USD ($) | [1] | Dec. 31, 2021 £ / shares shares | Aug. 06, 2021 £ / shares shares | Aug. 06, 2021 $ / shares shares | Dec. 31, 2020 £ / shares shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Ordinary shares issued (in shares) | shares |  |  |  |  | 53,761,510 | 4,181,818 | 4,181,818 | 49,447,473
Ordinary shares, par value (in pounds per share) | £ / shares |  |  |  |  | £ 1.00 | £ 1.00 |  | £ 1.00
Offering price (in USD per share) | $ / shares |  |  |  |  |  |  | $ 82.50 |
Proceeds from issuance of ordinary shares, net | $ 322,600 | $ 322,557 | $ 0 | $ 0 |  |  |  |
Repayment of long-term debt obligations |  | $ 452,256 | $ 482,065 | $ 24,210 |  |  |  |
Senior Loans |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Repayment of long-term debt obligations | $ 450,000 |  |  |  |  |  |  |
[1] | The consolidated statements of cash flows for the years ended December 31, 2020 and 2019 have been revised. For further details refer to “Note 1. Nature of Operations.”

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