XML 146 R117.htm IDEA: XBRL DOCUMENT v3.24.0.1
Shareholders' Equity and Share-Based Compensation - Narrative (Details)
1 Months Ended 12 Months Ended
May 31, 2021
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2012
May 25, 2022
USD ($)
Dec. 31, 2021
$ / shares
Sep. 30, 2015
USD ($)
Dec. 31, 1996
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares reacquired during period (in shares) | shares   196,934 670,816          
Percentage of outstanding shares reacquired   0.50% 1.60%          
Shares reacquired during period, value | $   $ 6,500,000 $ 24,000,000          
Share price of treasury stock acquired during period (in usd per share) | $ / shares   $ 32.85 $ 35.82          
Accumulated shares purchased (in shares) | shares   439,035            
Average cost per share (in usd per share) | $ / shares   $ 34,490            
Remaining authorized repurchase amount | $   $ 34,900,000            
Treasury stock (in shares) | shares   25,911,087 25,714,153          
Preferred stock, shares authorized (in shares) | shares   1,000,000 1,000,000         1,000,000
Preferred stock, par value (in usd per share) | $ / shares   $ 0.001 $ 0.001         $ 0.001
Fungible share pool, grant of full value share conversion ratio       2.5        
Intrinsic value | $ / shares   0            
Weighted average exercise prices of vested and exercisable options (in usd per share) | $ / shares   38.98 $ 38.60     $ 37.94    
Share price (in usd per share) | $ / shares   $ 32.70            
Aggregate intrinsic value of vested options | $   $ 400,000            
Aggregate intrinsic value of options | $   $ 400,000            
Minimum | Employee stock option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period   4 years            
Minimum | Restricted stock units                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period   1 year            
Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Expiration period   10 years            
Maximum | Restricted stock units                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period   3 years            
2022 program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Authorized repurchase amount | $         $ 50,000,000      
2015 program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Authorized repurchase amount | $             $ 50,000,000  
2010 program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Amended increase in shares reserved for issuance (in shares) | shares 2,500,000              
Shares available for grant (in shares) | shares   1,067,611