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Shareholders’ Equity (Details) - USD ($) | 3 Months Ended | 111 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Jun. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2011 | Dec. 31, 2008
Class of Stock [Line Items] |  |  |  |  |
Common stock, shares authorized (in shares) |  | 195,000,000 | 195,000,000 |  |
Common stock, par value (in dollars per share) |  | $ 0.01 | $ 0.01 |  |
Common stock, shares issued (in shares) |  | 99,925,610 | 99,876,385 |  |
Common stock, shares, outstanding (in shares) |  | 92,739,089 | 92,689,864 |  |
Preferred stock, shares authorized (in shares) |  | 5,000,000 | 5,000,000 |  |
Preferred stock par value (in dollars per share) |  | $ 0.01 | $ 0.01 |  |
Number of shares issued for each share of preferred stock (in shares) |  | 100 |  |  |
Stock repurchase program, authorized amount |  | $ 130,000,000.0 |  | $ 60,000,000.0 |
Stock repurchase program, authorized, increase amount | $ 70,000,000.0 |  |  |  |
Treasury shares acquired (in shares) |  | 7,186,521 |  |  |
Treasury stock, value |  | $ 86,300,000 | $ 86,300,000 |  |
Treasury stock, shares, acquired (in shares) |  | 0 |  |  |
Stock repurchase program, remaining authorized repurchase amount |  | $ 43,700,000 |  |  |
Convertible preferred shares |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock par value (in dollars per share) |  | $ 0.01 |  |  |
Preferred shares issued (in shares) |  |  |  |  | 160,000
Preferred shares outstanding (in shares) |  | 52,238 | 52,284 |  |

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