v3.26.3
Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Millions
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated  Other Comprehensive Loss
Deferred Compensation
Treasury Stock
Beginning balances (shares) at Dec. 31, 2024 [1],[2]   22,899          
Beginning balances at Dec. 31, 2024 $ 1,390.2 $ 11.1 [1] $ 830.5 $ 550.3 $ (1.7) $ 9.8 $ (9.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 94.2     94.2      
Other comprehensive loss (1.5)       (1.5)    
Dividend declared (47.3)     (47.3)      
Issuance under various plans (shares) [1],[2],[3]   611          
Issuance under various plans [3] 76.4 $ 0.4 [1] 76.0        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   36          
Share-based compensation and tax benefit [4],[5] 6.7   6.7        
Treasury stock activities [2] 0.0         2.7 (2.7)
Ending balances (shares) at Sep. 30, 2025 [1],[2]   23,546          
Ending balances at Sep. 30, 2025 1,518.7 $ 11.5 [1] 913.2 597.2 (3.2) 12.5 (12.5)
Beginning balances (shares) at Jun. 30, 2025 [1],[2]   23,420          
Beginning balances at Jun. 30, 2025 1,499.1 $ 11.4 [1] 896.4 594.1 (2.8) 12.5 (12.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 19.4     19.4      
Other comprehensive loss (0.4)       (0.4)    
Dividend declared (16.3)     (16.3)      
Issuance under various plans (shares) [1],[2],[3]   125          
Issuance under various plans [3] 15.2 $ 0.1 [1] 15.1        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   1          
Share-based compensation and tax benefit [4],[5] 1.7   1.7        
Treasury stock activities 0.0         0.0 0.0
Ending balances (shares) at Sep. 30, 2025 [1],[2]   23,546          
Ending balances at Sep. 30, 2025 1,518.7 $ 11.5 [1] 913.2 597.2 (3.2) 12.5 (12.5)
Beginning balances (shares) at Dec. 31, 2025 [1],[2]   23,896          
Beginning balances at Dec. 31, 2025 1,598.5 $ 11.6 [1] 962.8 626.8 (2.7) 12.6 (12.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 106.3     106.3      
Other comprehensive loss 2.7       2.7    
Dividend declared (52.7)     (52.7)      
Issuance under various plans (shares) [1],[2],[3]   299          
Issuance under various plans [3] 38.7 $ 0.1 [1] 38.6        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   60          
Share-based compensation and tax benefit [4],[5] 7.7   7.7        
Treasury stock activities [2] 0.0         5.2 (5.2)
Ending balances (shares) at Sep. 30, 2026 [1],[2]   24,255          
Ending balances at Sep. 30, 2026 1,701.2 $ 11.7 [1] 1,009.1 680.4 0.0 17.8 (17.8)
Beginning balances (shares) at Jun. 30, 2026 [1],[2]   24,105          
Beginning balances at Jun. 30, 2026 1,673.4 $ 11.7 [1] 986.7 676.7 (1.7) 17.5 (17.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 21.6     21.6      
Other comprehensive loss 1.7       1.7    
Dividend declared (17.9)     (17.9)      
Issuance under various plans (shares) [1],[2],[3]   150          
Issuance under various plans [3] 19.9   19.9        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   0          
Share-based compensation and tax benefit [4],[5] 2.5   2.5        
Treasury stock activities 0.0         0.3 (0.3)
Ending balances (shares) at Sep. 30, 2026 [1],[2]   24,255          
Ending balances at Sep. 30, 2026 $ 1,701.2 $ 11.7 [1] $ 1,009.1 $ 680.4 $ 0.0 $ 17.8 $ (17.8)
[1] 2.0 million shares of preferred stock at $0.01 par value have been authorized. No preferred shares have been issued or are outstanding; accordingly, no information has been included in the Condensed Consolidated Statements of Stockholders’ Equity.    
[2] Includes 161 thousand, 129 thousand, 128 thousand, and 114 thousand shares at September 30, 2026, December 31, 2025, September 30, 2025 and December 31, 2024, respectively, held in a Rabbi Trust related to the Non-Qualified Deferred Compensation Plan.
[3] Includes shares issued under the Retirement Savings Plan, DRIP/DSPP and/or ATM program, as applicable.
[4] Includes amounts for shares issued for directors’ compensation.
[5] The shares issued under the SICP are net of shares withheld for employee taxes. For the nine months ended September 30, 2026 and 2025, we withheld 15 thousand and 8 thousand shares, respectively, for employee taxes.