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Note 16 - Acquisitions (Details Textual)
12 Months Ended
Jul. 01, 2021
USD ($)
Mar. 01, 2021
USD ($)
shares
Jan. 15, 2021
USD ($)
shares
Jan. 02, 2020
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Goodwill, Ending Balance         $ 14,404,618 $ 11,505,852
Payments to Acquire Businesses, Gross         $ 6,138,102 $ 9,400,000
Assets Acquisition of MPI Products, Inc. [Member]            
Business Combination, Consideration Transferred, Total       $ 9,400,000    
Number of Operating Segments         1  
Goodwill, Ending Balance       1,700,000    
Assets Acquisition of MPI Products, Inc. [Member] | Trademarks [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total       1,600,000    
Assets Acquisition of MPI Products, Inc. [Member] | Customer Lists [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total       $ 2,700,000    
Komtek Forge Acquisition [Member]            
Business Combination, Consideration Transferred, Total     $ 3,600,000      
Goodwill, Ending Balance     $ 832,306      
Komtek Forge Acquisition [Member] | Common Class A [Member]            
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares     60,000      
Acquisition of Global Tek Manufacturing LLC [Member]            
Goodwill, Ending Balance   $ 2,066,461        
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares   61,475        
Payments to Acquire Businesses, Gross   $ 4,900,000        
Business Combination, Contingent Consideration, Liability, Total   1,500,000        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   1,500,000        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Annual Value, High   750,000        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low   0        
Acquisition of Global Tek Manufacturing LLC [Member] | Trademarks [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total   1,162,000        
Acquisition of Global Tek Manufacturing LLC [Member] | Customer Lists [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total   1,041,000        
Acquisition of Global Tek Manufacturing LLC [Member] | Trade Names [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total   $ 1,200,000        
Acquisition of Emergency Hydraulics LLC [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total $ 400,000          
Business Combination, Consideration Transferred, Liabilities Incurred 300,000          
Acquisition of Emergency Hydraulics LLC [Member] | Customer Lists [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total $ 413,589