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Note 4 - Stockholders' Equity (Detail) (USD $)
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24 Months Ended | 0 Months Ended | 1 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
May 04, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Nov. 18, 2007
|
Oct. 19, 2007
|
May 31, 2007
|
May 04, 2007
|
Dec. 31, 2012
Warrants [Member]
|
May 04, 2007
Series A Preferred Stock [Member]
Initially Be Equal To [Member]
|
May 04, 2007
Series A Preferred Stock [Member]
|
Dec. 31, 2012
Series A Preferred Stock [Member]
|
Nov. 18, 2007
Seven Year Warrants [Member]
|
Oct. 19, 2007
Seven Year Warrants [Member]
|
Oct. 31, 2007
Seven Year Warrants [Member]
|
Oct. 19, 2007
One Year Warrants [Member]
|
Oct. 31, 2007
One Year Warrants [Member]
|
Nov. 18, 2007
Five Year Warrants [Member]
|
Oct. 19, 2007
Five Year Warrants [Member]
|
|
| Preferred Stock, Shares Authorized | 5,000,000 | |||||||||||||||||
| Preferred Stock, Par or Stated Value Per Share (in Dollars per share) | $ 0.001 | $ 0.001 | ||||||||||||||||
| Common Stock, Shares Authorized | 50,000,000 | 50,000,000 | ||||||||||||||||
| Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ 0.001 | $ 0.001 | ||||||||||||||||
| Preferred Stock, Shares Outstanding | 1,761,900 | 138,400 | ||||||||||||||||
| Preferred Stock, Dividends Per Share, Declared (in Dollars per share) | $ 0.119 | |||||||||||||||||
| Share Price (in Dollars per share) | $ 1.70 | $ 1.70 | ||||||||||||||||
| Preferred Stock, Voting Rights | 0.729 | |||||||||||||||||
| Dividends Payable (in Dollars) | $ 174,000 | |||||||||||||||||
| Preferred Stock, Liquidation Preference, Value (in Dollars) | $ 329,000 | |||||||||||||||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 3,704,854 | 1,495,952 | 3,141,499 | 1,759,307 | 2,059,307 | 1,495,952 | 1,495,952 | 1,495,952 | 1,495,952 | 149,595 | 149,595 | |||||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) | 5.00 | 5.00 | 3.52 | |||||||||||||||
| Term of Warrant | 7 years | 7 years | 7 years | 1 year | 1 year | 5 years | 5 years | |||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms | 1 year 36 days | |||||||||||||||||