Note 4 - Equity, Stock Plan and Warrants (Detail) - Schedule of Warrants (USD $)	Mar. 31, 2013
Weighted Exercise Price (in Dollars per share)	$ 6.56
Warrants Outstanding [Member] | December 9, 2004 - Warrants [Member]
Warrants Outstanding	68,127
Warrants Outstanding [Member] | June 10, 2009 - Warrants [Member]
Warrants Outstanding	17,464
Warrants Outstanding [Member] | August 31, 2009 - Warrants [Member]
Warrants Outstanding	26,602
Warrants Outstanding [Member] | October 2, 2009 - Warrants#1 [Member]
Warrants Outstanding	606,218
Warrants Outstanding [Member] | March 15, 2010 - Warrants [Member]
Warrants Outstanding	8,337
Warrants Outstanding [Member] | March 15, 2010 - Warrants #2 [Member]
Warrants Outstanding	10,000
Warrants Outstanding [Member] | April 5, 2010 - Warrants [Member]
Warrants Outstanding	930
Warrants Outstanding [Member] | December 15, 2010 - Warrants [Member]
Warrants Outstanding	91,795
Warrants Outstanding [Member]
Warrants Outstanding	829,473
Exercisable [Member] | December 9, 2004 - Warrants [Member]
Exercisable	68,127
Exercisable [Member] | June 10, 2009 - Warrants [Member]
Exercisable	17,464
Exercisable [Member] | August 31, 2009 - Warrants [Member]
Exercisable	26,602
Exercisable [Member] | October 2, 2009 - Warrants#1 [Member]
Exercisable	606,218
Exercisable [Member] | March 15, 2010 - Warrants [Member]
Exercisable	8,337
Exercisable [Member] | March 15, 2010 - Warrants #2 [Member]
Exercisable	10,000
Exercisable [Member] | April 5, 2010 - Warrants [Member]
Exercisable	930
Exercisable [Member] | December 15, 2010 - Warrants [Member]
Exercisable	91,795
Exercisable [Member]
Exercisable	829,473
Weighted Exercise Price [Member] | December 9, 2004 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 20.70
Weighted Exercise Price [Member] | June 10, 2009 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 7.50
Weighted Exercise Price [Member] | August 31, 2009 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 7.50
Weighted Exercise Price [Member] | October 2, 2009 - Warrants#1 [Member]
Weighted Exercise Price (in Dollars per share)	$ 5.00
Weighted Exercise Price [Member] | March 15, 2010 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 7.50
Weighted Exercise Price [Member] | March 15, 2010 - Warrants #2 [Member]
Weighted Exercise Price (in Dollars per share)	$ 5.00
Weighted Exercise Price [Member] | April 5, 2010 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 7.50
Weighted Exercise Price [Member] | December 15, 2010 - Warrants [Member]
Weighted Exercise Price (in Dollars per share)	$ 6.00
Remaining Life [Member] | December 9, 2004 - Warrants [Member]
Remaining Life	1 year 244 days
Remaining Life [Member] | June 10, 2009 - Warrants [Member]
Remaining Life	6 years 65 days
Remaining Life [Member] | August 31, 2009 - Warrants [Member]
Remaining Life	6 years 65 days
Remaining Life [Member] | October 2, 2009 - Warrants#1 [Member]
Remaining Life	6 years 211 days
Remaining Life [Member] | March 15, 2010 - Warrants [Member]
Remaining Life	6 years 9 months
Remaining Life [Member] | March 15, 2010 - Warrants #2 [Member]
Remaining Life	6 years 9 months
Remaining Life [Member] | April 5, 2010 - Warrants [Member]
Remaining Life	6 years 9 months
Remaining Life [Member] | December 15, 2010 - Warrants [Member]
Remaining Life	2 years 244 days