Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Long-term Debt Instruments (Details) (Parentheticals)

v3.5.0.2
Note 7 - Long-term Debt Instruments (Details) (Parentheticals) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Revolving Credit [Member]    
Effective interest rate 4.40% [1],[2]
Term Loan [Member]    
Effective interest rate 3.70% [1],[2]
Debt Instrument, Periodic Payment, Principal $ 102,000 $ 102,000
Promissory Note Dated August 2, 2013 [Member]    
Effective interest rate [3],[4] 2.99% 2.99%
Debt Instrument, Periodic Payment, Principal $ 125,000 $ 125,000
Capital Lease Obligations [Member]    
Effective interest rate 6.00% 6.00%
[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 discount of ($7,000) and ($50,000) at June 30, 2016 and December 31, 2015, respectively. See “Promissory Notes and Installment Agreements” below for additional information.
[4] Uncollateralized note.