Notes Payable (Details Textual) (USD $)	0 Months Ended		1 Months Ended		12 Months Ended
	Dec. 31, 2010	Oct. 13, 2010	Feb. 19, 2010	May 21, 2009	Jan. 31, 2013	Jan. 31, 2012	May 14, 2009
Notes Payable			$ 600,000	$ 800,000
Class of Warrant or Right, Exercise Price of Warrants or Rights							$ 0.0064
Debt Instrument, Interest Rate, Stated Percentage					4.00%		14.00%
Class Of Warrant Or Right, Issued			120,000	200,000
Stock Issued During Period, Shares, New Issues				80,000
Debt Instrument, Maturity Date				Apr. 10, 2010
Extended Debt Instrument Maturity Date			Apr. 10, 2011
Debt Instrument, Covenant Description			(a) extended the maturity date of the subordinated notes for a period of one year from April 10, 2010 to April 10, 2011, (b) removed Aerosonic's obligation to issue shares of its common stock upon each cash drawdown made on or after February 19, 2010, (c) revised the ratio of common shares underlying warrants issuable per each $1.00 of principal amount borrowed from ".25 shares per $1.00 of principal amount to ".20 shares per $1.00 of principal amount" with respect to cash drawdowns made on or after February 19, 2010 and (d) deleted certain negative covenants relating to the issuance of securities. The warrant modifications (a) extended the expiration date of any warrants issued prior to February 19, 2010 for a period of five years from April 10, 2015 to April 10, 2020, (b) extended the expiration date of any warrants issued on or after February 19, 2010 from April 10, 2015 to the sixth anniversary date of the issuance of the warrant certificate and (c) revised the purchase price for any warrants issued on or after February 19, 2010 from $0.64 per share to a price equal to 50% of the volume weighted average of the selling price of the Company's common stock on February 12, 2010 and for the 19 trading days prior to February 12, 2010, or $1.98 per share.
Class of Warrant or Right, Date from which Warrants or Rights Exercisable					Feb. 19, 2016
Proceeds from (Repayments of) Notes Payable	100,000	700,000
Accretion Expense					0	26,000
Loss on extinguishment of debt					9,000	25,000
Debt Instrument, Unused Borrowing Capacity, Amount							$ 2,000,000