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Stock-Based Compensation (Tables)
12 Months Ended
Jan. 01, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of allocation of share-based compensation expense [Table Text Block]
    January 1, 2022     January 2, 2021     December 28, 2019  
    $     $     $  
Selling, general and administrative expenses   9,100     12,570     10,471  
Other income(1)       (894 )   (4,131 )
Earnings from discontinued operations(2)       540     1,145  
Total stock-based compensation expense   9,100     12,216     7,485  
Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock option activity [Table Text Block]
                Weighted-        
                average        
          Weighted-     remaining        
          average     contractual     Aggregate  
    Stock options     exercise price     term (years)     intrinsic value  
Outstanding, beginning of year   2,170,780   $ 6.95              
Granted   142,499     14.77              
Exercised   (920,526 )   7.18              
Forfeited   (333,375 )   7.56              
Outstanding, end of year   1,059,378   $ 7.75     6.5   $ 1,219  
Exercisable, end of year   665,988   $ 7.46     5.2   $ 653  
          Weighted-  
          average grant-  
    Stock options     date fair value  
Non-vested, beginning of year   554,987   $ 2.54  
Granted   142,499     8.10  
Vested   (208,477 )   2.49  
Forfeited   (95,619 )   3.26  
Non-vested, end of year   393,390   $ 4.49  
Schedule of stock options granted using the Black-Scholes option pricing model [Table Text Block]
  January 1, 2022 January 2, 2021 December 28, 2019
Grant-date stock price $14.77 $4.64 $3.57
Dividend yield(a) 0% 0% 0%
Expected volatility(b) 61.7% 60.0% 48.6%
Risk-free interest rate(c) 1.0% 0.4% 2.3%
Expected life of options (years)(d) 6.0 6.0 5.8
Share-based Compensation Arrangements by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]
                    Weighted-                  
                    average                    
              remaining     Weighted-          

Weighted-

  Exercise price range     Outstanding     contractual life     average exercise     Exercisable     average exercise  
  Low     High     options     (years)     price     options     price  
$ 3.25   $ 4.72     97,860     6.5   $ 3.58     87,060   $ 3.44  
  4.73     5.00     361,385     8.5     4.73     117,917     4.73  
  5.01     9.48     146,978     3.1     6.70     144,978     6.71  
  9.49     9.79     218,470     5.4     9.50     218,470     9.50  
  9.80     14.77     234,685     6.6     13.17     97,563     10.93  
              1,059,378     6.5   $ 7.75     665,988   $ 7.46  
Restricted stock units ("RSUs") [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

The following table summarizes non-vested RSU activity during the year ended January 1, 2022:

          Weighted-  
          average grant-  
    RSUs     date fair value  
Non-vested, beginning of year   647,299   $ 3.39  
Granted   245,848     13.32  
Vested   (285,554 )   3.93  
Forfeited   (101,582 )   3.78  
Non-vested, end of year   506,011   $ 7.71  
Performance Share Unit ("PSUs") [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock options granted using the Black-Scholes option pricing model [Table Text Block]
Grant-date stock price $ 14.77  
Dividend yield   0%  
Expected volatility(a)   76.9%  
Risk-free interest rate(b)   0.3%  
Expected life (in years)(c)   2.7  
Schedule of non-vested PSU activity [Table Text Block]

The following table summarizes non-vested EBITDA PSU activity during the year ended January 1, 2022:

          Weighted-  
          average grant-  
    EBITDA PSUs     date fair value  
Non-vested, beginning of year   3,004,675   $ 3.56  
Granted   666,332     13.90  
Vested   (2,813,175 )   3.53  
Forfeited   (187,661 )   11.40  
Non-vested, end of year   670,171   $ 11.77  
Total Shareholder Return Performance Shares [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock options granted using the Black-Scholes option pricing model [Table Text Block]
          Weighted-  
          average grant-  
    TSR PSUs     date fair value  
Non-vested, beginning of year   -   $ -  
Granted   74,428     23.40  
Vested   -     -  
Forfeited   (3,082 )   23.40  
Non-vested, end of year   71,346   $ 23.40  
Chief Executive Officer [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock options granted using the Black-Scholes option pricing model [Table Text Block]
 
    Stock Options     PSUs  
Grant-date stock price $ 3.36   $ 3.36  
Exercise price $ 3.36     NA  
Dividend yield   0%     0%  
Expected volatility(a)   47.9%     55.7%  
Risk-free interest rate(b)   2.4%     2.3%  
Expected life (in years)(c)   6.5     1.8  
Schedule of non-vested equity awards [Table Text Block]
    Stock           EBITDA     Stock price  
    options     RSUs     PSUs     PSUs  
Non-vested, beginning of year   960,061     341,746     892,857     297,619  
Vested   -     (170,873 )   (297,619 )   (297,619 )
Non-vested, end of year   960,061     170,873     595,238     -  
Chief Financial Officer [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock options granted using the Black-Scholes option pricing model [Table Text Block]
    Stock Options     PSUs  
Grant-date stock price $ 2.38   $ 2.38  
Exercise price $ 2.38     NA  
Dividend yield   0%     0%  
Expected volatility(a)   49.7%     55.9%  
Risk-free interest rate(b)   1.4%     1.4%  
Expected life (in years)(c)   6.5     2.1  
Schedule of non-vested equity awards [Table Text Block]
   

Stock

         

EBITDA

    Stock price  
    options     RSUs     PSUs     PSUs  
Non-vested, beginning of year   262,182     218,546     173,319     57,773  
Granted   -     29,090     -     -  
Vested   -     (109,273

)

  (57,773

)

  (57,773

)

Non-vested, end of year   262,182     138,363     115,546     -