Note 8 - Stockholders' Equity (Details) - Assumptions Used in Calculating Fair Value of Warrants Issued, Directors
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1 Months Ended | 12 Months Ended | ||
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Jan. 31, 2013
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Jul. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Note 8 - Stockholders' Equity (Details) - Assumptions Used in Calculating Fair Value of Warrants Issued, Directors [Line Items] | ||||
Expected Volatility | 47.64%us-gaap_FairValueAssumptionsExpectedVolatilityRate | 46.49%us-gaap_FairValueAssumptionsExpectedVolatilityRate | 47.08%us-gaap_FairValueAssumptionsExpectedVolatilityRate | |
Risk free Interest rates | 0.91%us-gaap_FairValueAssumptionsRiskFreeInterestRate | 0.75%us-gaap_FairValueAssumptionsRiskFreeInterestRate | 1.38%us-gaap_FairValueAssumptionsRiskFreeInterestRate | 0.65%us-gaap_FairValueAssumptionsRiskFreeInterestRate |
Expected lives (years) | 5 years | 5 years | 5 years | 4 years 186 days |
Minimum [Member] | ||||
Note 8 - Stockholders' Equity (Details) - Assumptions Used in Calculating Fair Value of Warrants Issued, Directors [Line Items] | ||||
Expected Volatility |
47.08%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
40.38%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
40.96%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Risk free Interest rates |
1.01%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
0.19%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Expected lives (years) | 3 years 186 days | 1 year 219 days | ||
Maximum [Member] | ||||
Note 8 - Stockholders' Equity (Details) - Assumptions Used in Calculating Fair Value of Warrants Issued, Directors [Line Items] | ||||
Expected Volatility |
100.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
100.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
46.88%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Risk free Interest rates |
1.27%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
0.77%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Expected lives (years) | 4 years 25 days | 5 years | ||
Director [Member] | ||||
Note 8 - Stockholders' Equity (Details) - Assumptions Used in Calculating Fair Value of Warrants Issued, Directors [Line Items] | ||||
Dividend yield |
0.00%us-gaap_FairValueAssumptionsExpectedDividendRate / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
0.00%us-gaap_FairValueAssumptionsExpectedDividendRate / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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