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Recently Issued Accounting Pronouncements (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 24, 2017
Sep. 25, 2016
Sep. 24, 2017
Sep. 25, 2016
Mar. 26, 2017
Recently Issued Accounting Pronouncements          
Provision for income taxes $ 1,318,300 $ 1,034,700 $ 1,852,100 $ 1,093,100  
Stock issuances (in shares) 0        
Internal-use computer software $ 4,400,000   $ 4,400,000   $ 4,300,000
Maximum          
Recently Issued Accounting Pronouncements          
Historical sales returns, as a percent of revenue 3.00%   3.00%    
ASU 2016-09 | Adjustment          
Recently Issued Accounting Pronouncements          
Provision for income taxes     $ 40,000    
Effective tax rate (as a percent)     0.90%