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Note 9 - Notes Payable and Capital Leases (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
Dec. 31, 201
8
    
Dec. 31, 2017
  
Capital Lease with First American Equipment Finance, payable in monthly installments of $2,890 (amortized over 5 years).
    
 
      
3,000
  
Capital Lease with Wells Fargo, payable in monthly installments of $367 (amortized over 5 years).
    
 
      
2,000
  
Subordinated Notes (Officers) due on demand, interest at 4%, which consolidated prior Subordinated Notes (Officers). During January 2019, $600,000 of this balance was exchanged for 181,000 shares of our common stock at then market value
    
1,597,000
      
1,507,000
  
Notes Payable (Affiliates) due 2015, interest at prime (3.25%) plus 0.25% (3.5%) at December 31, 2017 (see Note 12) (Related Party).
    
32,000
      
32,000
  
Promissory Note with Merrick Company due on demand, interest at 4.25% (Related Party).
    
39,000
      
76,000
  
Promissory Note with Schwan Leasing due on demand, interest at 4.25% (Related Party).
    
127,000
      
60,000
  
Notes Payable (Affiliates) due 2021, interest at 11.75% (see Note 12) (Related Party).
    
28,000
      
41,000
  
Term Loan with PNC, payable in monthly installments of $100,000 amortized over 5 years, interest at 8.25%, balance due December 2022, which uses balloons and related equipment as collateral
    
4,700,000
      
6,000,000
  
Total long-term debt
    
6,523,000
      
7,721,000
  
Less current portion
    
(4,432,000
 )    
(1,247,000
 )
Total Long-term debt, net of current portion
   $
2,091,000
     $
6,474,000
  
Schedule of Leverage Ratios [Table Text Block]
December 31, 2017
4.75
to
1.00
March 31, 2018
4.50
to
1.00
June 30, 2018
4.25
to
1.00
September 30, 2018
not applicable
December 31, 2018
3.50
to
1.00
March 31, 2019
not applicable
June 30, 2019
3.00
to
1.00
September 30, 2019 and thereafter
2.75
to
1.00