Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Long Term Debt (Details Textual)

v3.5.0.2
Note 7 - Long Term Debt (Details Textual)
 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 02, 2016
USD ($)
shares
Mar. 24, 2016
USD ($)
Aug. 02, 2013
USD ($)
$ / shares
shares
Oct. 31, 2011
USD ($)
Mar. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Aug. 22, 2016
USD ($)
Aug. 21, 2016
USD ($)
May 23, 2016
USD ($)
Jul. 28, 2014
USD ($)
Revised Loan Agreement [Member] | PNC Bank [Member] | After March 23, 2019 [Member]                        
Debt Instrument Percentage of Total Finacing to be Paid Upon Early Retirement of Debt Obligations   0.00%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | On or Before March 23, 2017 [Member]                        
Debt Instrument Percentage of Total Finacing to be Paid Upon Early Retirement of Debt Obligations   1.00%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | After March 23, 2017 But Prior to or on March 23, 2018 [Member]                        
Debt Instrument Percentage of Total Finacing to be Paid Upon Early Retirement of Debt Obligations   0.50%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | After March 23, 2018 But Prior to or on March 23, 2019 [Member]                        
Debt Instrument Percentage of Total Finacing to be Paid Upon Early Retirement of Debt Obligations   0.25%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Term Loan [Member] | Prime Rate [Member]                        
Debt Instrument, Basis Spread on Variable Rate   2.25%       3.50%            
Revised Loan Agreement [Member] | PNC Bank [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]                        
Debt Instrument, Basis Spread on Variable Rate   3.25%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Term Loan [Member]                        
Debt Instrument, Periodic Payment, Principal   $ 101,600     $ 190,000              
Long-term Debt   $ 6,100,000                    
Debt Instrument, Term   5 years                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]                        
Debt Instrument, Basis Spread on Variable Rate   1.75%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                        
Debt Instrument, Basis Spread on Variable Rate   2.75%                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity   $ 12,000,000                    
Release of Borrowing Reduction on Line of Credit   1,000,000                    
Revised Loan Agreement [Member] | PNC Bank [Member] | Interest Expense [Member]                        
Gain (Loss) on Extinguishment of Debt           $ (68,000)            
Revised Loan Agreement [Member] | PNC Bank [Member] | Selling, General and Administrative Expenses [Member]                        
Debt Instrument, Fee Amount                     $ 5,000  
Revised Loan Agreement [Member] | PNC Bank [Member]                        
Payments of Debt Issuance Costs   $ 72,000                    
Debt Instrument, Termination Notice   90 days                    
Debt Instrument, Covenant, Fixed Charge Coverage Ratio         1.15              
Debt Instrument, Fee Amount                 $ 25,000      
Debt Instrument, Covenant Compliance, Minimum Tangible Adjusted Net Worth                 $ 26,000,000 $ 30,000,000    
Line of Credit Facility, Remaining Borrowing Capacity           2,294,000            
Promissory Note Dated August 2, 2013 [Member]                        
Debt Instrument, Unamortized Discount           0   $ 50,000        
Term Loan [Member]                        
Debt Issuance Costs, Net           (134,000)   (152,000)        
Amended Loan Agreement [Member] | PNC Bank [Member] | Term Loan [Member] | Prime Rate [Member]                        
Debt Instrument, Basis Spread on Variable Rate       2.50%                
Amended Loan Agreement [Member] | PNC Bank [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]                        
Debt Instrument, Basis Spread on Variable Rate       3.50%                
Amended Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]                        
Debt Instrument, Basis Spread on Variable Rate       2.00%                
Amended Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                        
Debt Instrument, Basis Spread on Variable Rate       3.00%                
Amended Loan Agreement [Member] | PNC Bank [Member] | Revolving Credit Facility [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity       $ 12,000,000                
Amendment 4 [Member] | PNC Bank [Member] | Term Loan [Member]                        
Debt Instrument, Periodic Payment, Principal       190,000                
Long-term Debt       $ 16,000,000                
Debt Instrument, Term       7 years                
Amendment 6 [Member] | PNC Bank [Member] | Revolving Credit Facility [Member]                        
Line of Credit Facility Reduction                       $ 1,500,000
Term Loan [Member]                        
Debt Instrument, Periodic Payment, Principal [1],[2]           102,000   102,000        
Long-term Debt           5,352,000 [3]   6,514,000        
Promissory Note Dated August 2, 2013 [Member] | Lenders [Member]                        
Proceeds from Issuance of Long-term Debt     $ 3,000,000                  
Number of Shares Issued to Each Lender on Warrant | shares     35,000                  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 2.23                  
Number of Shares Received by each Lender | shares     45,000                  
Promissory Note Dated August 2, 2013 [Member]                        
Debt Instrument, Periodic Payment, Principal [4],[5]           125,000   125,000        
Long-term Debt             950,000        
Lenders [Member]                        
Class of Warrant or Right, Exercised During Period | shares 35,000                      
Proceeds from Warrant Exercises $ 156,000                      
Long-term Debt           10,619,000   $ 9,836,000        
Debt Instrument, Annual Spending Limit for Capital Spending   $ 3,000,000   $ 6,000,000                
Payments of Debt Issuance Costs           $ 97,000 $ 13,000          
[1] Our Revolving Credit facility is collateralized by our accounts receivable and our Term Loan is collateralized by our property, plant, and equipment.
[2] See below "Revolving Credit and Term Loan Agreement" for monthly payment interest options. Prior to April 1, 2016, the monthly installment payment under the Term Loan was approximately $190,000.
[3] Net of debt issuance costs of ($134,000) and ($152,000) at September 30, 2016 and December 31, 2015, respectively.
[4] Net of debt discount of ($0) and ($50,000) at September 30, 2016 and December 31, 2015, respectively. See "Promissory Notes and Installment Agreements" below for additional information.
[5] Uncollateralized note.