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v3.26.1

Changes in Equity - Changes in Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance | $ 1,555,946 | $ 1,458,907 | $ 1,206,257 | $ 1,132,465 | $ 1,458,907 | $ 1,132,465
Net income | 153,930 | 142,902 | 116,140 | 120,652 | 296,832 | 236,792
Regular dividends paid and accrued | (41,387) | (41,796) | (36,782) | (37,434) |  |
Share-based compensation, net of forfeitures | 4,318 | 5,355 | 3,419 | 4,873 |  |
Shares exchanged for tax withholdings | (51) | (9,063) | (51) | (14,260) |  |
Periodic pension costs, net of income taxes | (358) | (359) | (39) | (39) | (717) | (78)
Ending balance | $ 1,672,398 | $ 1,555,946 | $ 1,288,944 | $ 1,206,257 | $ 1,672,398 | $ 1,288,944
Dividends accrued per common stock (in dollars per share) | $ 0.60 | $ 0.60 | $ 0.53 | $ 0.53 | $ 1.20 | $ 1.06
Amortization of net actuarial costs and prior service costs, income taxes | $ 96 | $ 95 | $ 10 | $ 11 | $ 191 | $ 21
Common Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance (in shares) | 68,974,187 | 68,938,230 | 68,961,735 | 68,915,409 | 68,938,230 | 68,915,409
Beginning balance | $ 691 | $ 691 | $ 231 | $ 231 | $ 691 | $ 231
Share-based compensation, net of forfeitures (in shares) | 611 | 57,967 | 357 | 77,670 |  |
Shares exchanged for tax withholdings (in shares) | (115) | (22,010) | (114) | (31,344) |  |
Ending balance (in shares) | 68,974,683 | 68,974,187 | 68,961,978 | 68,961,735 | 68,974,683 | 68,961,978
Ending balance | $ 691 | $ 691 | $ 231 | $ 231 | $ 691 | $ 231
Treasury Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance | (132,908) | (151,242) | (144,850) | (168,843) | (151,242) | (168,843)
Share-based compensation, net of forfeitures | 286 | 27,397 | 174 | 38,253 |  |
Shares exchanged for tax withholdings | (51) | (9,063) | (51) | (14,260) |  |
Ending balance | (132,673) | (132,908) | (144,727) | (144,850) | (132,673) | (144,727)
Additional Paid-in Capital |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance | 2,909 | 9,906 | 2,122 | 19,900 | 9,906 | 19,900
Share-based compensation, net of forfeitures | 4,102 | (6,997) | 3,311 | (17,778) |  |
Ending balance | 7,011 | 2,909 | 5,433 | 2,122 | 7,011 | 5,433
Accum. Other Comp. Income (Loss) |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance | 3,791 | 4,150 | 3,544 | 3,583 | 4,150 | 3,583
Periodic pension costs, net of income taxes | (358) | (359) | (39) | (39) |  |
Ending balance | 3,433 | 3,791 | 3,505 | 3,544 | 3,433 | 3,505
Retained Earnings |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance | 1,681,463 | 1,595,402 | 1,345,210 | 1,277,594 | 1,595,402 | 1,277,594
Net income | 153,930 | 142,902 | 116,140 | 120,652 |  |
Regular dividends paid and accrued | (41,387) | (41,796) | (36,782) | (37,434) |  |
Share-based compensation, net of forfeitures | (70) | (15,045) | (66) | (15,602) |  |
Ending balance | $ 1,793,936 | $ 1,681,463 | $ 1,424,502 | $ 1,345,210 | $ 1,793,936 | $ 1,424,502

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