XML 74 R64.htm IDEA: XBRL DOCUMENT v3.22.2.2
Preferred and Common Shares and Share-based Compensation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 44 Months Ended
Feb. 28, 2022
Jan. 31, 2022
May 31, 2021
Sep. 30, 2022
Jul. 01, 2022
Oct. 01, 2021
Sep. 30, 2022
Oct. 01, 2021
Sep. 30, 2021
Jul. 01, 2022
Dec. 31, 2021
Feb. 29, 2020
Oct. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Preferred shares, Authorized     7,000,000.0 7,000,000     7,000,000       7,000,000    
Preferred shares, voting rights     one vote per share                    
Preferred shares, Issued       0     0       0    
Preferred shares, outstanding       0     0       0    
Repurchase of common stock             $ 10,000,000            
Share-based compensation expense recognized       $ 5,954,000   $ 8,490,000   $ 20,169,000 $ 17,809,000        
Selling, General and Administrative Expenses                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Share-based compensation expense recognized       $ 4,649,000   $ 4,360,000   13,123,000 $ 13,906,000        
Share-Based Payment Arrangement, Option                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Fair value of stock options granted             $ 1,900,000            
Expected annual dividend yield             0.00%            
TSR Performance-based Restricted Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Expected annual dividend yield             0.00%            
Amended and Restated 2010 Incentive Plan | Deferred Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Number of outstanding shares       38,000     38,000       91,000    
Conversion of stock, converted to common shares             52,000            
Amended and Restated 2010 Incentive Plan | Share-Based Payment Arrangement, Option                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period 3 years                        
Stock options, Granted 40,000           40,000            
Stock options, Expiration Period 7 years                        
Amended and Restated 2010 Incentive Plan | Restricted Stock Units and Deferred Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Total fair value of stock units vested             $ 18,100,000            
Amended and Restated 2010 Incentive Plan | Restricted Stock Units and Deferred Stock Units | Board of Directors | Selling, General and Administrative Expenses                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Share-based compensation expense recognized             $ 1,100,000 $ 1,100,000          
Amended and Restated 2010 Incentive Plan | Restricted Stock Units (RSUs) | Maximum                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period             5 years            
Amended and Restated 2010 Incentive Plan | Restricted Stock Units (RSUs) | Minimum [Member]                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period             0 years            
Amended and Restated 2010 Incentive Plan | EPS Performance-based Restricted Stock Units | Maximum                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares             200.00%            
Amended and Restated 2010 Incentive Plan | EPS Performance-based Restricted Stock Units | Minimum [Member]                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares             0.00%            
Amended and Restated 2010 Incentive Plan | TSR Performance-based Restricted Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period             3 years            
Amended and Restated 2010 Incentive Plan | TSR Performance-based Restricted Stock Units | Maximum                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares             200.00%            
Amended and Restated 2010 Incentive Plan | TSR Performance-based Restricted Stock Units | Minimum [Member]                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares             0.00%            
Amended and Restated 2010 Incentive Plan | ATI Performance-based Restricted Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period   4 years                      
Amended and Restated 2010 Incentive Plan | ATI Performance-based Restricted Stock Units | Maximum                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares   100.00%                      
Amended and Restated 2010 Incentive Plan | ATI Performance-based Restricted Stock Units | Minimum [Member]                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Range of percentage of shares to be issued upon settlement following vesting of target number of shares   0.00%                      
Amended and Restated 2010 Incentive Plan | Performance Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Total fair value of stock units vested             $ 7,200,000            
Maximum number of common shares to be earned under these PSU grants       343,000     343,000            
Amended and Restated 2010 Incentive Plan | EPS and TSR Performance Stock Units                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Vesting/Performance period             3 years            
2018 Repurchase Plan                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Common stock repurchase program authorized amount                         $ 25,000,000.0
Shares repurchased         80,000         264,000      
Repurchase of common stock         $ 9,500,000         $ 25,000,000.0      
Shares repurchased, average cost per share         $ 118.97         $ 94.57      
2020 Repurchase Plan                          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                          
Common stock repurchase program authorized amount                       $ 50,000,000.0  
Shares repurchased         4,000                
Repurchase of common stock         $ 500,000                
Shares repurchased, average cost per share         $ 116.95                
Available for share repurchases       $ 49,500,000     $ 49,500,000