Note 7 - Note Payable (Detail) (USD $)	1 Months Ended	12 Months Ended					1 Months Ended					1 Months Ended		12 Months Ended		31 Months Ended		12 Months Ended	28 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Price per share - Term A Loan (Member)	Dec. 31, 2012 Black-Scholes Option Pricing Model (Member)	Jun. 30, 2012 Funded 50% by Oxford (Member) Credit Agreement [Member]	Jun. 30, 2012 Funded 50% by Horizon (Member)	Dec. 31, 2012 Closing Price Per Share (Member)	Dec. 31, 2012 Credit Agreement [Member]	Jun. 30, 2012 Credit Agreement [Member]	Jun. 30, 2012 Amount of Payment (Member)	May 01, 2013 Term A Loan [Member]	Dec. 31, 2012 Expiration Date - 2019-06-27 (Member)	Dec. 31, 2012 October 2009 Note [Member]	Apr. 30, 2012 October 2009 Note [Member]	Oct. 31, 2009 October 2009 Note [Member]	Dec. 31, 2012 November 2011 Note [Member]	Feb. 28, 2014 November 2011 Note [Member]	Nov. 30, 2011 November 2011 Note [Member]
Line of Credit Facility, Maximum Borrowing Capacity											$ 10,000,000
Line of Credit Facility, Covenant Terms							50%	50%
Debt Instrument, Payment Terms												$5
Debt Instrument, Interest Rate, Stated Percentage													11.75%
Debt Instrument, Payment Terms, Issuance of Warrants, Percentage		3.00%
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.01	$ 0.01	$ 0.01		$ 2.92				$ 2.80
Debt Conversion, Converted Instrument, Warrants or Options Issued (in Shares)		51,370
Debt Instrument, Covenant Description														seven
Deferred Finance Costs, Gross						73,654
Fair Value Assumptions, Expected Volatility Rate	74.30%	92.02%	75.17%	63.50%
Fair Value Assumptions, Risk Free Interest Rate	1.10%	0.73%	0.83%	2.02%
Fair Value Assumptions, Expected Term	3 years 6 months	1 year 47 days	1 year 219 days	2 years 36 days
Deferred Finance Costs, Net										217,715
Amortization of Deferred Charges	43,215
Interest Expense, Debt	300,278
Capital Leased Assets, Gross																	288,200			144,448
Capital Lease, Number of Payments																30			30
Debt Instrument, Periodic Payment																11,654			5,651
Repayments of Debt and Capital Lease Obligations															67,817			58,270
Capital Lease Obligations																		$ 71,602