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Note 6 - Long Term Debt (Details) - Long-term Debt Instruments (Parentheticals) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |
Effective interest rate |  | 6.00% |
Revolving Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective interest rate | [1] | 3.30% | 3.30%
Revolving Credit [Member] | Prime Rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Reference rate | [1] | 3.25% | 3.25%
Basis spread on variable rate | [1] | 2.00% | 2.00%
Revolving Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate | [1] | 3.00% | 3.00%
Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective interest rate | [1] | 3.70% | 3.70%
Term Loan [Member] | Prime Rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate | [1] | 2.50% | 2.50%
Periodic payment, principal (in Dollars) | [1] | $ 190 | $ 190
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate | [1] | 3.50% | 3.50%
Promissory Note dated February 12, 2013 ("New Note") [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective interest rate | [2] | 6.00% | 6.00%
Periodic payment, principal (in Dollars) | [2] | $ 10 | $ 10
Promissory Note dated August 2, 2013 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective interest rate | [2],[3] | 2.99% | 2.99%
Periodic payment, principal (in Dollars) | [2],[3] | $ 125 | $ 125
[1] | Our Revolving Credit facility is collateralized by our accounts receivable and our Term Loan is collateralized by our property, plant, and equipment.
[2] | Uncollateralized note.
[3] | Net of debt discount of ($94,000) and ($137,000) for June 30, 2015 and December 31, 2014, respectively. See "Promissory Notes and Installment Agreements" below for additional information.

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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