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Significant Accounting Policies (Details) - USD ($)
 6 Months Ended
Jun. 28, 2020
Dec. 29, 2019
Acquired Finite Lived Intangible Assets [Line Items]    
Right of use assets $ 2,212,000 $ 2,370,000
Lease Liabilities $ 2,218,000 2,287,000
Fair value of assets acquired and liabilities, Description The Company recognizes assets acquired (including goodwill and identifiable intangible assets) and liabilities assumed at fair value on the acquisition date. Subsequent changes to the fair value of such assets acquired and liabilities assumed are recognized in earnings, after the expiration of the measurement period, a period not to exceed 12 months from the acquisition date. Acquisition-related expenses and acquisition-related restructuring costs are recognized in earnings in the period in which they are incurred  
Goodwill $ 185,000 185,000
Impairment of intangible assets 0  
Pledged cash security related to use of credit cards 100,000 $ 100,000
Sensi ML    
Acquired Finite Lived Intangible Assets [Line Items]    
Goodwill $ 185,000