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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Millions
Total
Common Stock Issued
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Balance (in shares) at Dec. 31, 2019   30,896,661      
Balance at Dec. 31, 2019 $ 597.7 $ 3.1 $ 78.8 $ 638.4 $ (122.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) 83.8     83.8  
Other comprehensive income (loss), net of tax 10.7       10.7
Dividends declared (55.0)     (55.0)  
Restricted stock issuances, net (in shares)   302,705      
Stock-based employee compensation expense 8.6   8.6    
Modification to director stock-based compensation 4.0   4.0    
Stock issued to directors as compensation (in shares)   3,689      
Stock issued to directors as compensation 0.8   0.8    
Deferred compensation directors stock trust (in shares)   149,469      
Purchases and cancellation of common stock (in shares)   (27,779)      
Purchases and cancellation of common stock (1.0)     (1.0)  
Balance (in shares) at Dec. 31, 2020   31,324,745      
Balance at Dec. 31, 2020 649.6 $ 3.1 92.2 666.2 (111.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) 88.9     88.9  
Other comprehensive income (loss), net of tax (7.1)       (7.1)
Dividends declared (55.3)     (55.3)  
Restricted stock issuances, net (in shares)   201,261      
Stock-based employee compensation expense 8.4   8.4    
Stock issued to directors as compensation (in shares)   2,347      
Stock issued to directors as compensation 1.1   1.1    
Purchases and cancellation of common stock (in shares)   (78,790)      
Purchases and cancellation of common stock $ (3.4)     (3.4)  
Balance (in shares) at Dec. 31, 2021 31,449,563 31,449,563      
Balance at Dec. 31, 2021 $ 682.2 $ 3.1 101.7 696.4 (119.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) (6.6)     (6.6)  
Other comprehensive income (loss), net of tax 23.6       23.6
Dividends declared (72.2)     (72.2)  
Restricted stock issuances, net (in shares)   867,897      
Restricted stock issuances, net 0.0 $ 0.1 (0.1)    
Stock-based employee compensation expense 20.2   20.2    
Stock issued to directors as compensation (in shares)   10,079      
Stock issued to directors as compensation 1.1   1.1    
Deferred compensation directors stock trust (in shares)   60,899      
Purchases and cancellation of common stock (in shares)   (273,027)      
Purchases and cancellation of common stock (6.9)     (6.9)  
Issuance of shares related to Merger (in shares)   22,814,562      
Issuance of shares related to Merger $ 537.9 $ 2.3 535.6    
Balance (in shares) at Dec. 31, 2022 54,929,973 54,929,973      
Balance at Dec. 31, 2022 $ 1,179.3 $ 5.5 $ 658.5 $ 610.7 $ (95.4)