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 ($)
 9 Months Ended 12 Months Ended
Jan. 17, 2018
Sep. 27, 2017
May 31, 2018
Aug. 31, 2017
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)     465,500  
Granted (in shares) [1]     82,500  
Exercised (in shares)     (10,000)  
Forfeited or expired (in shares)     (2,500)  
Outstanding, end of period (in shares)     535,500 465,500
Options exercisable (in shares)     379,668  
Weighted Average Exercise Price [Roll Forward]        
Outstanding, beginning of period (in dollars per share)     $ 4.88  
Granted (in dollars per share)     8.05  
Exercised (in dollars per share)     7.50  
Forfeited or expired (in dollars per share)     7.50  
Outstanding, end of period (in dollars per share)     5.31 $ 4.88
Options exercisable (in dollars per share)     $ 4.66  
Stock Options, Additional Disclosure [Abstract]        
Weighted average remaining contractual term     6 years 3 months 14 days 6 years 3 months 18 days
Weighted average remaining contractual term options exercisable     5 years 2 months 16 days  
Approximate aggregate intrinsic value     $ 2,163,540 $ 1,007,740
Approximate aggregate intrinsic value options exercisable     $ 1,780,275  
2004 Incentive Plan and 2014 Equity Plan [Member] | Mr. Harding [Member]        
Number of Options [Roll Forward]        
Granted (in shares)   50,000    
2004 Incentive Plan and 2014 Equity Plan [Member] | Board of Directors [Member]        
Number of Options [Roll Forward]        
Granted (in shares) 32,500      
[1] Includes 50,000 shares granted to Mr. Harding on September 27, 2017 and 32,500 total shares granted to the board of directors on January 17, 2018.