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Accrued Liabilities: (Details) - USD ($)
Dec. 28, 2019
Dec. 29, 2018
Accrued Liabilities    
Accrued compensation and benefits $ 887,900 $ 1,490,700
Deferred rent 388,500 91,100
Accrued interest 210,800 218,600
Accrued purchases of goods and services 186,200 716,400
Other 1,109,700 611,800
Accrued liabilities $ 2,783,100 $ 3,128,600