v3.10.0.1
Document And Entity Information - shares
6 Months Ended
Sep. 23, 2018
Nov. 02, 2018
Document Information [Line Items]    
Entity Registrant Name NATHANS FAMOUS INC  
Entity Central Index Key 0000069733  
Trading Symbol nath  
Current Fiscal Year End Date --03-31  
Entity Filer Category Non-accelerated Filer  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Common Stock, Shares Outstanding (in shares)   4,191,569
Document Type 10-Q  
Document Period End Date Sep. 23, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Amendment Flag false