Document And Entity Information (USD $)	12 Months Ended
	Jan. 31, 2012	Apr. 30, 2012	Jul. 29, 2011
Entity Registrant Name	AEROSONIC CORP /DE/
Entity Central Index Key	0000109471
Current Fiscal Year End Date	--01-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	aim
Entity Common Stock, Shares Outstanding		3,774,763
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 31, 2012
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2012
Entity Well-Known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 12,594,000