Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Details)

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FAIR VALUE MEASUREMENTS (Details)
Nov. 30, 2018
USD ($)
Assets
Liabilities
Aug. 31, 2018
USD ($)
Assets
Liabilities
Information on assets and liabilities measured at fair value [Abstract]    
Held-to-maturity securities $ 191,000 $ 190,400
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Number of assets or liabilities [Abstract]    
Number of assets | Assets 0 0
Number of liabilities | Liabilities 0 0
Significant Other Observable Inputs (Level 2)    
Number of assets or liabilities [Abstract]    
Number of assets | Assets 4 7
Significant Unobservable Inputs (Level 3)    
Number of assets or liabilities [Abstract]    
Number of liabilities | Liabilities 1 1
Recurring [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Accumulated unrealized gains and (losses) $ 78,200 $ 66,400
Recurring [Member] | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Accumulated unrealized gains and (losses) 78,200 66,400
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 0
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 0
Recurring [Member] | Significant Other Observable Inputs (Level 2)    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 10,985,800 8,718,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 10,985,800 8,718,000
Recurring [Member] | Significant Unobservable Inputs (Level 3)    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 0
Recurring [Member] | Significant Unobservable Inputs (Level 3) | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 0
Recurring [Member] | Fair Value [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 10,985,800 8,718,000
Recurring [Member] | Fair Value [Member] | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 10,985,800 8,718,000
Recurring [Member] | Cost / Other Value [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 10,907,600 8,644,900
Recurring [Member] | Cost / Other Value [Member] | U.S. Treasury and Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities $ 10,907,600 $ 8,644,900