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v3.24.0.1

Earnings per Share and Stock Repurchase Program (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Jul. 31, 2023 USD ($) | Feb. 06, 2019 USD ($)
Common Stock |  |  |  |  |
Common Stock conversion ratio, at the option of the holder | 1 |  |  |  |
Net (loss) income |  |  |  |  |
Net income | $ | $ 262.1 | $ 251.5 | $ 165.7 |  |
Shares |  |  |  |  |
Shares (in shares) | 33,400,000 | 33,500,000 | 33,800,000 |  |
Per Share Amount |  |  |  |  |
Net income (in dollars per share) | $ / shares | $ 7.85 | $ 7.51 | $ 4.90 |  |
Dilutive securities, principally common stock options |  |  |  |  |
Common stock equivalents (in shares) | 100,000 | 100,000 | 100,000 |  |
Common stock equivalents (in dollars per share) | $ / shares | $ (0.03) | $ (0.03) | $ (0.02) |  |
Net (loss) income |  |  |  |  |
Net income | $ | $ 262.1 | $ 251.5 | $ 165.7 |  |
Weighted average number of shares: |  |  |  |  |
Shares (in shares) | 33,500,000 | 33,600,000 | 33,900,000 |  |
Securities not included in the computation of diluted EPS |  |  |  |  |
Net income (in dollars per share) | $ / shares | $ 7.82 | $ 7.48 | $ 4.88 |  |
Shares repurchased |  |  |  |  |
Number of shares repurchased | 91,622 | 493,733 | 109,998 |  |
Stock Repurchased During Period, Value | $ | $ 16.0 | $ 69.4 | $ 16.0 |  |
Class A |  |  |  |  |
Common Stock |  |  |  |  |
Common Stock, votes per share (Number of votes) | 1 | 1 |  |  |
Shares of Common Stock reserved for issuance under stock-based compensation plans | 1,967,652 |  |  |  |
Class B |  |  |  |  |
Common Stock |  |  |  |  |
Common Stock, votes per share (Number of votes) | 10 | 10 |  |  |
Shares of Common Stock reserved for conversion | 5,958,290 |  |  |  |
February 6, 2019 | Class A |  |  |  |  |
Shares repurchased |  |  |  |  |
Value of shares of the entity's Class A common stock authorized to be repurchased | $ |  |  |  | $ 150.0 | $ 150.0
Remaining authorized repurchase amount | $ | $ 12.0 |  |  |  |

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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 16 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-16 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-10 + Details
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- Definition There is no established public trading market for our Class B Common Stock, which is held exclusively by members of the Horne family. The principal holders of such stock are subject to restrictions on transfer with respect to their shares. Each share of our Class B Common Stock (10 votes per share) is convertible into one share of Class A Common Stock (1 vote per share). + References No definition available. + Details
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