Note 6 - Common and Preferred Stock and Earnings (Loss) per Share (Detail) (USD $)	0 Months Ended		3 Months Ended	6 Months Ended												3 Months Ended						1 Months Ended	3 Months Ended
	Oct. 21, 2011	Jun. 15, 2010	Mar. 31, 2013	Dec. 15, 2010	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Apr. 27, 2010	Mar. 31, 2012 Conversion from Liability to Additional Paid in Capital [Member]	Sep. 30, 2012 Warrants Cancelled [Member]	Jun. 15, 2010 Warrants 2010 [Member]	Dec. 15, 2010 Public Warrants [Member] Per Shareholder [Member]	Dec. 15, 2010 Public Warrants [Member]	Mar. 31, 2013 outstanding Stock Options (Member)	Mar. 31, 2012 outstanding Stock Options (Member)	Mar. 31, 2013 Outstanding Warrants (Member)	Mar. 31, 2012 Outstanding Warrants (Member)	Mar. 31, 2013 Convertible Preferred Shares (Member)	Mar. 31, 2012 Convertible Preferred Shares (Member)	Oct. 21, 2011 Series A Preferred Stock [Member]	Mar. 31, 2013 Carpenter [Member]	Jun. 13, 2010 Carpenter [Member]
Common Stock, Shares, Issued			8,155,066		8,155,066			7,755,066		5,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,202,641					171,980			660,792	5,000,000				15
Common Stock, Value, Issued (in Dollars)			$ 42,825,000		$ 42,825,000			$ 40,825,000		$ 25,000,000
Investment Warrants Expiration Date	Dec. 10, 2008
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	4.54												5.00		5.00
Stock Issued During Period, Shares, New Issues				748,672																			6,328,179
Proceeds from Issuance of Common Stock (in Dollars)				3,527,000
Preferred Stock, Redemption Amount (in Dollars)			1,000,000				5,000,000		3,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock (in Dollars)																						10,000,000
Preferred Stock, Shares Issued																						10,000
Preferred Stock, Liquidation Preference, Value (in Dollars)			1,250,000
Warrants Outstanding								6,487,800				153,876
Warrants and Rights Outstanding (in Dollars)											4,955,000
Adjustments to Additional Paid in Capital, Warrant Issued (in Dollars)			$ 161,000
Common Stock, Shares, Outstanding			8,155,066		8,155,066			7,755,066																333,334
Sale of Stock, Percentage of Ownership before Transaction		24.70%
Sale of Stock, Percentage of Ownership after Transaction			77.60%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount																452,900	284,900	7,008,452	7,390,348	220,264	220,264