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Note 7 - NIH Grant Funding (Detail) (USD $)	3 Months Ended		141 Months Ended	12 Months Ended	59 Months Ended	71 Months Ended		1 Months Ended	12 Months Ended
Note 7 - NIH Grant Funding (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Aug. 31, 2013 First NIH Grant [Member]	Aug. 31, 2012 First NIH Grant [Member]	Aug. 31, 2013 First NIH Grant [Member]	Mar. 31, 2013 First NIH Grant [Member]	Sep. 30, 2012 Second NIH Grant [Member]	Aug. 31, 2013 Second NIH Grant [Member]	Mar. 31, 2013 Second NIH Grant [Member]
Project Period Covered by Grants					5 years				1 year
Project Extension Period				1 year
Grant Award						$ 20,400,000
Unused Grant Funds							1,300,000			900,000
Revenue from Grants	$ 797,040	$ 854,063	$ 23,766,059					$ 1,900,000