Quarterly report pursuant to Section 13 or 15(d)

SHAREHOLDERS' EQUITY, Incentive and Equity Plan, and Combined Stock Option Activity (Details)

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SHAREHOLDERS' EQUITY, Incentive and Equity Plan, and Combined Stock Option Activity (Details) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 26, 2018
Nov. 30, 2018
Aug. 31, 2018
2014 Equity Plan [Member]      
Stock Option Activity [Abstract]      
Reserved shares of common stock for issuance (in shares)   1,600,000  
2004 Incentive Plan and 2014 Equity Plan [Member]      
Number of Options [Roll Forward]      
Outstanding, beginning of period (in shares)   535,500  
Granted (in shares) [1]   50,000  
Exercised (in shares)   (25,000)  
Forfeited or expired (in shares)   0  
Outstanding, end of period (in shares)   560,500 535,500
Options exercisable (in shares)   408,001  
Weighted Average Exercise Price [Roll Forward]      
Outstanding, beginning of period (in dollars per share)   $ 5.31  
Granted (in dollars per share)   11.15  
Exercised (in dollars per share)   3.13  
Forfeited or expired (in dollars per share)   0  
Outstanding, end of period (in dollars per share)   5.93 $ 5.31
Options exercisable (in dollars per share)   $ 4.96  
Stock Options, Additional Disclosure [Abstract]      
Weighted average remaining contractual term   6 years 4 months 24 days 6 years 14 days
Weighted average remaining contractual term options exercisable   5 years 5 months 8 days  
Approximate aggregate intrinsic value   $ 2,595,100 $ 3,180,990
Approximate aggregate intrinsic value options exercisable   $ 2,261,300  
2004 Incentive Plan and 2014 Equity Plan [Member] | Mr. Harding [Member]      
Number of Options [Roll Forward]      
Granted (in shares) 50,000    
[1] Includes 50,000 shares granted to Mr. Harding on September 26, 2018.