XML 84 R63.htm IDEA: XBRL DOCUMENT v3.20.1
Common Shares and Share-based Compensation - Additional Information (Details) - USD ($)
3 Months Ended
Apr. 03, 2020
Mar. 29, 2019
Feb. 29, 2020
Dec. 31, 2019
Oct. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Repurchase of common stock $ 5,500,000        
Share-based compensation expense recognized 3,199,000 $ 2,727,000      
Selling, General and Administrative Expenses          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation expense recognized $ 2,798,000 2,531,000      
Deferred Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of outstanding shares 192,000     187,000  
Stock Options | Amended and Restated 2010 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Intrinsic value of stock options exercised $ 1,000,000.0        
Cash received from exercise of stock options $ 200,000        
Fully-vested stock options outstanding 60,000        
Stock options granted 0        
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 $ 900,000 $ 800,000      
Restricted Stock Units and Deferred Stock Units | Amended and Restated 2010 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Total fair value of stock units vested $ 9,000,000.0        
Restricted Stock Units (RSUs) | Amended and Restated 2010 Incentive Plan | Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 0 years        
Restricted Stock Units (RSUs) | Amended and Restated 2010 Incentive Plan | Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 5 years        
EPS Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 3 years        
EPS Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan | Minimum          
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%        
EPS Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan | 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%        
TSR Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 3 years        
TSR Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan | Minimum          
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%        
TSR Performance-based Restricted Stock Units | Amended and Restated 2010 Incentive Plan | 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%        
Performance Stock Units | Amended and Restated 2010 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Total fair value of stock units vested $ 10,800,000        
Range of percentage of shares to be issued upon settlement following vesting of target number of shares 200.00%        
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 65,000        
Repurchase of common stock $ 5,500,000        
Shares repurchased, average cost per share $ 84.55        
2020 Repurchase Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Common stock repurchase program authorized amount     $ 50,000,000.0    
2018 and 2020 Repurchase Plans          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Available for share repurchases $ 59,500,000