Note 10 - Fair Value Measurements (Detail) - Fair value measuements, valuation assumptions (USD $)	1 Months Ended	6 Months Ended	12 Months Ended
	Jan. 02, 2010	Sep. 30, 2012	Mar. 31, 2012
Expiration Date		Sep. 10, 2019
Warrant Liability (in Dollars)		$ 198,903	$ 355,290
Warrant Issued 09-10-2010 [Member]
Expiration Date	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019
Number of Warrants (in Shares)	136,920	136,920	136,920
Exercise Price (in Dollars per share)	$ 6.70	$ 6.70	$ 6.70
Fair Value Per Share (in Dollars per share)	$ 6.70	$ 3.72	$ 6.33
Expected Volatality	28.51%	43.48%	53.19%
Remaining Life in Years	9	6.95	7.45
Risk Free Interest Rate	2.81%	1.64%	2.23%
Warrant Liability (in Dollars)	267,848	108,063	338,116
Warrant Issued 09-10-2010 #2 [Member]
Expiration Date	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2015
Number of Warrants (in Shares)	10,416	10,416	10,416
Exercise Price (in Dollars per share)	$ 6.70	$ 6.70	$ 6.70
Fair Value Per Share (in Dollars per share)	$ 6.70	$ 3.72	$ 6.33
Expected Volatality	28.51%	43.48%	53.19%
Remaining Life in Years	5	2.95	3.45
Risk Free Interest Rate	1.59%	1.59%	2.23%
Warrant Liability (in Dollars)	13,808	3,314	17,174
Warrant Issued 07-26-2010 [Member]
Expiration Date	Dec. 31, 2019	Dec. 31, 2019
Number of Warrants (in Shares)	50,000	50,000
Exercise Price (in Dollars per share)	$ 3.35	$ 3.35
Fair Value Per Share (in Dollars per share)	$ 3.90	$ 3.72
Expected Volatality	42.04%	43.48%
Remaining Life in Years	7	6.83
Risk Free Interest Rate	0.94%	0.94%
Warrant Liability (in Dollars)	66,193	62,519
Warrant Issued 07-26-2012 #2 [Member]
Expiration Date	Dec. 31, 2019	Dec. 31, 2019
Number of Warrants (in Shares)	20,000	20,000
Exercise Price (in Dollars per share)	$ 3.35	$ 3.35
Fair Value Per Share (in Dollars per share)	$ 3.90	$ 3.72
Expected Volatality	42.04%	43.48%
Remaining Life in Years	7	6.83
Risk Free Interest Rate	0.94%	0.94%
Warrant Liability (in Dollars)	$ 26,477	$ 25,007