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Document And Entity Information
 9 Months Ended
Oct. 29, 2011
Nov. 30, 2011
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 29, 2011  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Entity Registrant Name ASTRO MED INC /NEW/  
Entity Central Index Key 0000008146  
Entity Filer Category Smaller Reporting Company  
Trading Symbol alot  
Current Fiscal Year End Date --01-31  
Entity Common Stock, Shares Outstanding   7,396,728