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Shareholders' Equity (Deficit): Stock Options (Details) - shares
12 Months Ended
Dec. 29, 2018
Feb. 20, 2011
2001 Plan and 2010 Plan | Stock options | Minimum    
Stock Option Plans    
Exercise price of stock options as a percentage of fair value on the date of grant 100.00%  
Threshold voting rights above which the option exercise price may not be less than 110% of the fair market value (as a percent) 10.00%  
Exercise price of stock options as a percentage of fair value on the date of grant for an individual who owns more than 10% of voting rights 110.00%  
2001 Plan and 2010 Plan | Stock options | Maximum    
Stock Option Plans    
Term of the option 10 years  
2001 Plan    
Stock Option Plans    
Number of shares authorized for issuance   750,000
2010 Plan    
Stock Option Plans    
Number of shares authorized for issuance 700,000  
Nonemployee Directors Plan | Stock options    
Stock Option Plans    
Number of shares authorized for issuance 350,000