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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Millions
Total
Common Stock
 Additional Paid-In Capital
 Retained Earnings
 Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Dec. 31, 2021   31,449,563      
Beginning 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) 1.6     1.6  
Other comprehensive income (loss), net of tax 30.7       30.7
Dividends declared (13.9)     (13.9)  
Restricted stock issuances, net (in shares)   350,154      
Stock-based employee compensation expense 3.4   3.4    
Stock issued to directors as compensation (in shares)   794      
Stock issued to directors as compensation 0.3   0.3    
Purchases and retirement of common stock (in shares)   (94,847)      
Purchases and retirement of common stock (2.9)     (2.9)  
Ending Balance (in shares) at Mar. 31, 2022   31,705,664      
Ending Balance at Mar. 31, 2022 $ 701.4 $ 3.1 105.4 681.2 (88.3)
Beginning Balance (in shares) at Dec. 31, 2022 54,929,973 54,929,973      
Beginning Balance at Dec. 31, 2022 $ 1,179.3 $ 5.5 658.5 610.7 (95.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) (7.7)     (7.7)  
Other comprehensive income (loss), net of tax 7.5       7.5
Dividends declared (22.4)     (22.4)  
Restricted stock issuances, net (in shares)   40,164      
Stock options exercised (in shares)   813      
Stock options exercised 0.1   0.1    
Stock-based employee compensation expense 3.7   3.7    
Stock issued to directors as compensation 0.1   0.1    
Deferred compensation directors stock trust (in shares)   3,408      
Purchases and retirement of common stock (in shares)   (54,435)      
Purchases and retirement of common stock $ (1.3)     (1.3)  
Ending Balance (in shares) at Mar. 31, 2023 54,919,923 54,919,923      
Ending Balance at Mar. 31, 2023 $ 1,159.3 $ 5.5 $ 662.4 $ 579.3 $ (87.9)