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Document and Entity Information (USD $)
 12 Months Ended
Jan. 31, 2013
Mar. 28, 2013
Jul. 27, 2012
Document and Entity Information [Abstract]      
Entity Registrant Name ASTRO MED INC /NEW/    
Entity Central Index Key 0000008146    
Document Type 10-K    
Document Period End Date Jan. 31, 2013    
Amendment Flag false    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --01-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 44,991,919
Entity Common Stock, Shares Outstanding   7,397,571  
Trading Symbol alot