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Operating Leases: Maturities and other (Details) - USD ($)
3 Months Ended
Apr. 01, 2023
Mar. 26, 2022
Maturities of operating lease liabilities:    
2022 $ 574,200  
2023 784,400  
2024 806,000  
2025 828,200  
2026 851,100  
Thereafter 1,773,300  
Total 5,617,200  
Less imputed interest (993,500)  
Present value of lease liabilities 4,623,700  
Operating lease liability    
Operating lease liability, current $ 500,000  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Accrued Liabilities, Current  
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flow outflow from operating leases $ 189,100 $ 184,100