XML 49 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Cover Page - USD ($)
 12 Months Ended
Jan. 31, 2020
Apr. 03, 2020
Aug. 02, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jan. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name AstroNova, Inc.    
Entity Central Index Key 0000008146    
Current Fiscal Year End Date --01-31    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Well-known Seasoned Issuer No    
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    
Document Annual Report true    
Document Transition Report false    
Entity Address, State or Province RI    
Entity Public Float     $ 158,496,000
Entity Common Stock, Shares Outstanding   7,097,000