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Note 6 - Carrying Amount of the Company's Outstanding Debt (Details) (Parentheticals) | Dec. 31, 2015 | Dec. 31, 2014
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Senior Secured Debt, Due March 5, 2016 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 8.00%
Senior Secured Debt, Due June 30, 2017 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 8.00%
Convertible Note Instrument, Due March 5, 2018 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.00% | 7.00%
Convertible Note Instrument, Due March 5, 2020 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.00% | 7.00%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 + Details
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