| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
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Three Months Ended June 30,
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Six Months Ended June 30,
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2026
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2025
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2026
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2025
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(In Thousands, Except Shares and Per Share Data)
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Earnings per common share
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Weighted average common shares outstanding
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54,665,179 |
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54,610,516 |
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54,653,855 |
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54,603,086 |
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Net income available to common stockholders
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$ |
85,762 |
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$ |
61,393 |
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$ |
168,733 |
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$ |
124,617 |
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Basic earnings per common share
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$ |
1.57 |
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$ |
1.12 |
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$ |
3.09 |
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$ |
2.28 |
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Weighted average common shares outstanding
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54,665,179 |
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54,610,516 |
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54,653,855 |
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54,603,086 |
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Dilutive effects of assumed exercise of stock options and vesting of performance shares
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37,707 |
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53,964 |
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45,118 |
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57,491 |
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Weighted average common and dilutive potential common shares outstanding
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54,702,886 |
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54,664,480 |
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54,698,973 |
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54,660,577 |
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Net income available to common stockholders
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$ |
85,762 |
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$ |
61,393 |
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$ |
168,733 |
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$ |
124,617 |
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Diluted earnings per common share
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$ |
1.57 |
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$ |
1.12 |
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$ |
3.09 |
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$ |
2.28 |
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Three Months Ended June 30,
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Six Months Ended June 30,
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2026
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2025
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2026
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2025
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Earnings per common share - reported
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$ |
1.57 |
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$ |
1.12 |
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$ |
3.09 |
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$ |
2.28 |
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Earnings per common share - pro forma
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0.78 |
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0.56 |
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1.54 |
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1.14 |
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Diluted earnings per common share - reported
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1.57 |
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1.12 |
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3.09 |
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2.28 |
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Diluted earnings per common share - pro forma
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0.78 |
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0.56 |
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1.54 |
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1.14 |
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