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Note 6 - Related Party Notes Payable (Detail) (USD $)
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1 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jul. 31, 2012
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Feb. 29, 2012
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Jun. 30, 2012
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Jun. 30, 2012
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Dec. 31, 2011
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Jun. 30, 2012
If Converted Prior to Maturity Date or Consumption of Qualified IPO [Member]
Related Party BSC Convertible Notes Payable [Member]
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Jun. 30, 2012
If Converted In Context Other than Qualified Financing [Member]
Related Party BSC Convertible Notes Payable [Member]
|
Jun. 30, 2012
Related Party BSC Convertible Notes Payable [Member]
Qualified Financing from Medtronic, Inc., St. Jude Medical, Inc., or Johnson & Johnson [Member]
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Jun. 30, 2012
Related Party BSC Convertible Notes Payable [Member]
Other Investors [Member]
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Feb. 29, 2012
Related Party BSC Convertible Notes Payable [Member]
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Dec. 31, 2009
Related Party BSC Convertible Notes Payable [Member]
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Jun. 30, 2012
Related Party BSC Convertible Notes Payable [Member]
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Feb. 02, 2012
Related Party BSC Convertible Notes Payable [Member]
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Feb. 29, 2012
Related Party 2011 Unsecured Convertible Notes Payable [Member]
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Sep. 30, 2011
Related Party 2011 Unsecured Convertible Notes Payable [Member]
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Dec. 31, 2011
Related Party 2011 Unsecured Convertible Notes Payable [Member]
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| Proceeds from Related Party Debt (in Dollars) | $ 3,500,000 | |||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 10.00% | 0.00% | 15.00% | |||||||||||||
| Related Party Convertible Notes Payable, Extension Period | 3 years | |||||||||||||||
| (in Dollars) | 4,338,601 | 4,338,601 | 4,377,294 | |||||||||||||
| Maximum Percentage of Cash Proceeds from Qualified Financing Used to Prepay Outstanding Related Party Notes | 100.00% | 25.00% | ||||||||||||||
| Threshold Amount of Qualified Initial Public Offering (in Dollars) | 20,000,000 | 20,000,000 | ||||||||||||||
| Debt Instrument, Convertible, Conversion Ratio | 1 | 1 | ||||||||||||||
| Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ 8.00 | $ 0.60 | ||||||||||||||
| Derivative, Gain (Loss) on Derivative, Net (in Dollars) | 26,545 | 26,545 | ||||||||||||||
| Derivative Liabilities, Current (in Dollars) | 26,545 | 26,545 | ||||||||||||||
| Proceeds from Unsecured Notes Payable (in Dollars) | 1,310,000 | |||||||||||||||
| Warrants Issued During Period (in Shares) | 2,700,000 | 4,335,704 | 1,310,000 | |||||||||||||
| Term of Related Party Unsecured Convertible Notes Payable | 2 years | |||||||||||||||
| Term of Warrants | 5 years | 2 years | ||||||||||||||
| Warrants Issued During Period, Weighted Average Exercise Price (in Dollars per share) | $ 1.45 | $ 0.80 | $ 0.01 | |||||||||||||
| Conversion Price of Unsecured Convertible Notes Payable Upon Consummation of Initial Public Offering | 60.00% | |||||||||||||||
| Conversion Price of Unsecured Convertible Notes Payable Upon Consummation of Reverse Merger | 60.00% | |||||||||||||||
| Debt Conversion, Original Debt, Amount (in Dollars) | 10,811,500 | 1,425,865 | ||||||||||||||
| Debt Conversion, Converted Instrument, Shares Issued (in Shares) | 2,376,447 | |||||||||||||||
| Amount of Unamortized Discount Associated with Relative Fair Value of Warrants Written Off (in Dollars) | $ 405,602 | |||||||||||||||