Document and Entity Information - shares	6 Months Ended
	Aug. 03, 2019	Sep. 03, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 03, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	AstroNova, Inc.
Entity Central Index Key	0000008146
Current Fiscal Year End Date	--01-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	ALOT
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Entity Address, State or Province	RI
Entity Common Stock, Shares Outstanding		7,049,735