Note 5 - Stock-Based Compensation Plans and Warrants (Detail) (USD $)	0 Months Ended	1 Months Ended	2 Months Ended	9 Months Ended								3 Months Ended	12 Months Ended	114 Months Ended	9 Months Ended		0 Months Ended		9 Months Ended		32 Months Ended			0 Months Ended	16 Months Ended	22 Months Ended	29 Months Ended					2 Months Ended		2 Months Ended
	Dec. 14, 2011	Nov. 30, 2011	Nov. 30, 2009	Sep. 30, 2012	Sep. 30, 2011	Oct. 30, 2012	Dec. 31, 2011	Jul. 08, 2011	Nov. 30, 2010	Oct. 31, 2010	Jun. 30, 2012 Outside Director Compensation Plan [Member] Vesting on January 31, 2013 [Member]	Sep. 30, 2012 Outside Director Compensation Plan [Member]	Jun. 30, 2012 Outside Director Compensation Plan [Member]	Jun. 30, 2012 Outside Director Compensation Plan [Member]	Sep. 30, 2012 2009 Equity Incentive Plan [Member] Directors [Member]	Sep. 30, 2012 2009 Equity Incentive Plan [Member] Maximum [Member]	Jan. 10, 2011 2009 Equity Incentive Plan [Member]	Jan. 14, 2010 2009 Equity Incentive Plan [Member]	Sep. 30, 2012 2009 Equity Incentive Plan [Member]	Sep. 30, 2011 2009 Equity Incentive Plan [Member]	Aug. 30, 2012 2009 Equity Incentive Plan [Member]	Jan. 31, 2011 2009 Equity Incentive Plan [Member]	Dec. 31, 2009 2009 Equity Incentive Plan [Member]	May 22, 2009 2007Management Equity Incentive Plan [Member]	May 22, 2009 2007Management Equity Incentive Plan [Member]	May 22, 2009 2007Management Equity Incentive Plan [Member]	Jan. 02, 2010 2007Management Equity Incentive Plan [Member]	Sep. 30, 2012 2003 Management Equity Incentive Plan [Member]	Sep. 30, 2012 2007Management Equity Incentive Plan [Member]	Dec. 18, 2009 2009 Equity Incentive Plan [Member]	Nov. 30, 2009 Private Placement [Member]	Nov. 30, 2009 Warrant [Member]	Nov. 30, 2009 Lender [Member]	Nov. 30, 2009 Combined Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				862,500							13,795								537,500									315,000	10,000
Officers' Compensation (in Dollars)												$ 7,500	$ 30,000
Allocated Share-based Compensation Expense (in Dollars)				74,000	1,105,000							5,000	20,000						239,000	964,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized																							850,000							850,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term																			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																24 months
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized (in Dollars)				112,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures														72,782	22,782		140,000	115,000			537,500			90,000	100,000	250,000	150,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant																			34,718			595,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number													58,987	58,987
Proceeds from Issuance of Private Placement (in Dollars)		$ 6,000,000	$ 7,100,000
Private Placement Units			226,200																														20,880
Private Placement Units, Price per Unit (in Dollars per share)			$ 31.50																												$ 31.50
Common Stock, Shares, Issued		666,667		15,438,961			15,429,541	363,636																										3
Warrant Issued		(1)	1																															1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)		1	1			250,000																												1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		13	15			10																												15
Fair Value Assumptions, Expected Term																																3 years
Share Price (in Dollars per share)									$ 22.50	$ 22.50
Stock Issued During Period, Shares, New Issues	570,000	666,667
Sale of Stock, Price Per Share (in Dollars per share)	$ 9	$ 9						$ 11
Base for Issuing Purchase Warrants		3
Warrants Outstanding				448,423