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1. Basis of Presentation and Summary of Significant Accounting Policies (Details 2) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Sep. 29, 2019
Dec. 28, 2018
Cash $ 10,297,147 $ 4,187,450 $ 1,528,334 $ 1,291,317
Notes receivable 8,500,000 11,400,000    
Level 1        
Cash 10,297,147 4,187,450    
Level 2        
Notes receivable 8,521,897 11,409,709    
Accounts receivable $ 24,024,564 $ 28,201,279