Earnings per Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ 138,061	$ 103,066
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	28,052	27,602
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Dilutive Securities	836	703
Diluted Weighted Average Number of Shares Outstanding	28,888	28,305
Earnings Per Share, Basic	$ 4.92	$ 3.73
Earnings Per Share, Diluted	$ 4.78	$ 3.64
Anti-dilutive stock equivalent awards not included in the calculation of diluted loss per share	0	266

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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