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Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income taxes due $ 1,525,000 $ 4,000  
Goodwill 9,730,000 9,730,000  
Allowances for doubtful accounts 41,000 36,000  
Trade account receivable 4,000    
Decrease in retained earnings 36,000    
Monthly expense 27,000    
Right- of- use- asset 295,000    
Allowance for credit losses 42,000    
Lease liability 272,000    
Accounts receivable $ 315,000 398,000  
Payment due 30 days    
Useful lives 20 years    
Depereciation expense $ 11,533,000 10,733,000 $ 9,003,000
Accounts payable $ 1,434,000 $ 1,236,000  
Two Customer [Member]      
Accounts receivables carrying rate 12.00%    
One Customer [Member]      
Accounts receivables carrying rate   12.00%