v3.26.1
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 74.8     74.8      
Other comprehensive loss (1.1)       (1.1)    
Dividend declared (31.0)     (31.0)      
Issuance under various plans (shares) [1],[2],[3]   486          
Issuance under various plans [3] 61.2 $ 0.3 [1] 60.9        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   35          
Share-based compensation and tax benefit [4],[5] 5.0   5.0        
Treasury stock activities [2] 0.0         2.7 (2.7)
Ending balances (shares) at Jun. 30, 2025 [1],[2]   23,420          
Ending balances at Jun. 30, 2025 1,499.1 $ 11.4 [1] 896.4 594.1 (2.8) 12.5 (12.5)
Beginning balances (shares) at Mar. 31, 2025 [1],[2]   23,089          
Beginning balances at Mar. 31, 2025 1,447.3 $ 11.2 [1] 852.0 586.4 (2.3) 12.2 (12.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 23.9     23.9      
Other comprehensive loss (0.5)       (0.5)    
Dividend declared (16.2)     (16.2)      
Issuance under various plans (shares) [1],[2],[3]   325          
Issuance under various plans [3] 41.4 $ 0.2 [1] 41.2        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   6          
Share-based compensation and tax benefit [4],[5] 3.2   3.2        
Treasury stock activities 0.0         0.3 (0.3)
Ending balances (shares) at Jun. 30, 2025 [1],[2]   23,420          
Ending balances at Jun. 30, 2025 1,499.1 $ 11.4 [1] 896.4 594.1 (2.8) 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 84.7     84.7      
Other comprehensive loss 1.0       1.0    
Dividend declared (34.8)     (34.8)      
Issuance under various plans (shares) [1],[2],[3]   149          
Issuance under various plans [3] 18.8 $ 0.1 [1] 18.7        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   60          
Share-based compensation and tax benefit [4],[5] 5.2   5.2        
Treasury stock activities [2] 0.0         4.9 (4.9)
Ending balances (shares) at Jun. 30, 2026 [1],[2]   24,105          
Ending balances at Jun. 30, 2026 1,673.4 $ 11.7 [1] 986.7 676.7 (1.7) 17.5 (17.5)
Beginning balances (shares) at Mar. 31, 2026 [1],[2]   24,003          
Beginning balances at Mar. 31, 2026 1,651.7 $ 11.7 [1] 972.2 669.3 (1.5) 17.4 (17.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 25.4     25.4      
Other comprehensive loss (0.2)       (0.2)    
Dividend declared (18.0)     (18.0)      
Issuance under various plans (shares) [1],[2],[3]   94          
Issuance under various plans [3] 11.8   11.8        
Share-based compensation and tax benefit (shares) [1],[2],[4],[5]   8          
Share-based compensation and tax benefit [4],[5] 2.7   2.7        
Treasury stock activities 0.0         0.1 (0.1)
Ending balances (shares) at Jun. 30, 2026 [1],[2]   24,105          
Ending balances at Jun. 30, 2026 $ 1,673.4 $ 11.7 [1] $ 986.7 $ 676.7 $ (1.7) $ 17.5 $ (17.5)
[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 160 thousand, 129 thousand, 126 thousand, and 114 thousand shares at June 30, 2026, December 31, 2025, June 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 six months ended June 30, 2026 and 2025, we withheld 15 thousand and 8 thousand shares, respectively, for employee taxes.