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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 28, 2019
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(1) 47.87%  55.68% 
Risk-free interest rate(2) 2.36%  2.30% 
Expected life (in years)(3) 6.50  1.82 

(1) Determined based on the historical volatility of the Common Shares over the expected life of the stock options and performance period of the PSUs.

(2) Determined based on U.S. Treasury yields with a remaining term equal to the expected life of the stock options and performance period of the PSUs.
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(1) 49.65%  55.94% 
Risk-free interest rate(2) 1.40%  1.38% 
Expected life (in years)(3) 6.50  2.06 

(1) Determined based on the historical volatility of the Common Shares over the expected life of the stock options and performance period of the PSUs.

(2) Determined based on U.S. Treasury yields with a remaining term equal to the expected life of the stock options and performance period of the PSUs.

(3) Determined based on the mid-point of vesting (three years) and expiration (ten years) for the stock options and the derived service period for the PSUs.