Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Narrative (Details)

v3.20.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Jul. 29, 2019
Aug. 10, 2018
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized       84,008   44,021
Dividend yield 0.00%          
Expected volatility 31.50%          
Expected term 6 years 3 months          
Fair value of option (in dollars per share) $ 334.25          
Vesting period 4 years   5 years      
Additional share based compensation from modification     $ 687      
Unrecognized compensation expense $ 12,323          
Unrecognized compensation expense, recognition period 3 years 3 months 25 days          
Aggregate intrinsic value, options $ 11,997          
Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Risk-free interest rate 1.27%          
Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Risk-free interest rate 3.17%          
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized         50,000  
Number of shares outstanding 81,700 47,542        
Stock compensation expense $ 2,312 $ 1,590 $ 1,984      
Exercised (in shares) 100 200 0      
Time Based Vesting            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares outstanding 58,860          
Performance Based Stock Option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares outstanding 22,840          
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock compensation expense $ 669 $ 0 $ 500      
Restricted stock outstanding (in shares) 2,143          
Restriction lapse period 3 years          
Unvested restricted stock (in shares) 2,143 275        
Weighted average grant date fair value (in dollars per share) $ 1,168          
Granted (in shares) 2,143 0