Note 12 - Preferred Stock and Warrants Issued in 2008 Financing (Detail) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended				0 Months Ended	1 Months Ended	2 Months Ended
	Jun. 11, 2008	Sep. 30, 2012	Mar. 31, 2010	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2012 June 2008 Financing [Member]	Dec. 31, 2012 July 2008 Financing [Member]	Jun. 11, 2008 June 2008 Financing [Member]	Jul. 18, 2008 July 2008 Financing [Member]	Jul. 18, 2008 July 2008 Financing [Member]
Preferred Stock, Shares Issued				1,971,842	1,971,842	5,915,526		5,915,526	1,971,842	1,971,842
Proceeds from Issuance of Convertible Preferred Stock (in Dollars)								$ 15,000,000	$ 5,000,000
Preferred Stock, Redemption Price Per Share (in Dollars per share)								$ 2.5357	$ 5.0714	$ 5.0714
Convertible Preferred Stock, Shares Issued upon Conversion							2,957,763	0.5	0.5	0.5
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)						7.04	7.04	7.04	1.84	1.84
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners								9.90%
Warrant Expiration Period								5 years
Warrant Value At Issuance (in Dollars per share)								$ 1.84
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price (in Dollars per share)								$ 5.10	$ 5.10	$ 5.10
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		5 years	5 years					5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate				100.00%				100.00%		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				1.60%				4.50%		4.50%
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature (in Dollars)	$ 7.8									$ 2,600,000
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)									$ 2.5357	$ 2.5357
Fair Value Assumptions, Exercise Price (in Dollars per share)									$ 7.04	$ 7.04
Class Of Warrant Or Righst Percentage From Which Warrants Or NotRightsExercisable									9.90%
Warrants Exercised				0
Warrants Forfeited				0
Warrants Expired				0

Shengkai Innovations, Inc. 10-Q