Note 10 - Fair Value Measurements (Details) - Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques (USD $)			12 Months Ended	6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended			6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Mar. 31, 2011 Warrant Issued 09-10-2010 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 09-10-2010 [Member]	Mar. 31, 2013 Warrant Issued 09-10-2010 [Member]	Mar. 31, 2011 Warrant Issued 09-10-2010 #2 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 09-10-2010 #2 [Member]	Mar. 31, 2013 Warrant Issued 09-10-2010 #2 [Member]	Mar. 31, 2011 Warrant Issued 07-26-2012 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 07-26-2012 [Member]	Mar. 31, 2013 Warrant Issued 07-26-2012 [Member]	Mar. 31, 2011 Warrant Issued 07-26-2012 #2 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 07-26-2012 #2 [Member]	Mar. 31, 2013 Warrant Issued 07-26-2012 #2 [Member]	Mar. 31, 2011 Warrant Issued 11-20-2012 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 11-20-2012 [Member]	Mar. 31, 2013 Warrant Issued 11-20-2012 [Member]	Mar. 31, 2011 Warrant Issued 02-14-2013 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 02-14-2013 [Member]	Mar. 31, 2013 Warrant Issued 02-14-2013 [Member]	Mar. 31, 2011 Warrants Issued 07-12-2013 [Member] Fair Value Valuation at Inception [Member]	Mar. 31, 2011 Warrant Issued 08-12-2013 [Member] Fair Value Valuation at Inception [Member]	Sep. 30, 2013 Warrant Issued 08-12-2013 [Member]	Sep. 30, 2013 Warrant Issued 07-01-2013 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Expiration Date			Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2015	Sep. 10, 2015	Sep. 10, 2015	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019	Sep. 10, 2019
Number of Warrants (in Shares)			136,920	136,920	136,920	10,416	10,416	10,416	50,000	50,000	50,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000	20,000
Exercise Price (in Dollars per Share)			$ 6.70	$ 6.70	$ 6.70	$ 6.70	$ 6.70	$ 6.70	$ 3.35	$ 3.35	$ 3.35	$ 3.35	$ 3.35	$ 3.35	$ 3.56	$ 3.56	$ 3.56	$ 3.58	$ 3.67	$ 3.67	$ 3.33	$ 3.69	$ 3.69	$ 3.33
Fair Value Per Share (in Dollars per share)			$ 6.70	$ 4.00	$ 3.50	$ 6.70	$ 4.00	$ 3.50	$ 3.90	$ 4.00	$ 3.50	$ 3.90	$ 4.00	$ 3.50	$ 3.50	$ 4.00	$ 3.50	$ 3.80	$ 4.00	$ 3.50	$ 3.32	$ 3.69	$ 4.00	$ 4.00
Expected Volatality			28.51%	39.76%	41.45%	28.51%	39.76%	41.45%	42.04%	39.76%	41.45%	42.04%	39.76%	41.45%	42.45%	39.76%	41.45%	41.25%	39.76%	41.45%	40.26%	40.20%	39.76%	39.76%
Remaining Life in Years			9 years	5 years 346 days	6 years 164 days	5 years	1 year 346 days	2 years 164 days	7 years	5 years 346 days	6 years 120 days	7 years	5 years 346 days	6 years 120 days	6 years 302 days	5 years 346 days	6 years 6 months	6 years 211 days	5 years 346 days	6 years 164 days	6 years 62 days	6 years 29 days	5 years 346 days	5 years 346 days
Risk Free Interest Rate			2.81%	1.39%	1.24%	1.59%	0.33%	0.25%	0.94%	1.39%	1.24%	0.94%	1.39%	1.24%	1.09%	1.39%	1.24%	1.43%	1.39%	1.24%	2.00%	2.01%	1.39%	1.39%
Warrant Liability (in Dollars)	$ 282,213	$ 198,330	$ 267,848	$ 93,564	$ 81,080	$ 13,808	$ 1,983	$ 1,870	$ 66,193	$ 63,670	$ 53,269	$ 26,477	$ 25,468	$ 21,307	$ 21,441	$ 24,380	$ 20,664	$ 23,714	$ 23,835	$ 20,140	$ 19,523	$ 21,587	$ 23,738	$ 25,575