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Note 10 - Promissory Notes (Details) (USD $)
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12 Months Ended |
0 Months Ended |
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Dec. 31, 2014
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Jun. 30, 2014
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Jun. 01, 2012
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Jul. 15, 2011
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Proceeds from Issuance of Debt (in Dollars) |
$ 2,362,000 |
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares) |
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82,192 |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) |
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2.19 |
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| Warrants Not Settleable in Cash, Fair Value Disclosure (in Dollars) |
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100,000 |
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| Warrant [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Fair Value Assumptions, Risk Free Interest Rate |
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2.10% |
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| Fair Value Assumptions, Expected Volatility Rate |
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72.10% |
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| Fair Value Assumptions, Expected Dividend Rate |
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0.00% |
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| Fair Value Assumptions, Expected Term |
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7 years |
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| Fair Value, Inputs, Level 3 [Member] | Promissory Notes [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Long-term Debt, Fair Value (in Dollars) |
5,900,000 |
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| Oxford New Loan [Member] | Minimum [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Prepayment Fee Rate |
1.00% |
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| Oxford New Loan [Member] | Maximum [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Prepayment Fee Rate |
3.00% |
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| Oxford New Loan [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Debt Instrument, Face Amount (in Dollars) |
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6,000,000 |
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15,000,000 |
| Debt Instrument, Interest Rate, Stated Percentage |
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9.504% |
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9.50% |
| Additional Fee, Percentage |
5.00% |
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5.00% |
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| Proceeds from Issuance of Debt (in Dollars) |
2,400,000 |
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| Debt Instrument, Number of Monthly Payments |
36 |
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| Oxford Loan [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Repayments of Debt (in Dollars) |
2,900,000 |
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| Payment to Settle Final Payment Due (in Dollars) |
$ 700,000 |
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| Promissory Notes [Member] |
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| Note 10 - Promissory Notes (Details) [Line Items] |
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| Debt Instrument, Interest Rate, Effective Percentage |
9.50% |
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