Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Details)

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FAIR VALUE MEASUREMENTS (Details)
Nov. 30, 2019
USD ($)
Assets
Liabilities
Aug. 31, 2019
USD ($)
Assets
Liabilities
Information on assets and liabilities measured at fair value [Abstract]    
Held-to-maturity securities $ 0 $ 192,800
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 0 1
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) $ 0 $ 3,900
Recurring [Member] | U.S. Treasury Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Accumulated unrealized gains and (losses) 0 3,900
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 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 0 4,996,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) | U.S. Treasury Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 4,996,000
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 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 0 4,996,000
Recurring [Member] | Fair Value [Member] | U.S. Treasury Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 4,996,000
Recurring [Member] | Cost / Other Value [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities 0 4,992,100
Recurring [Member] | Cost / Other Value [Member] | U.S. Treasury Debt Securities [Member]    
Information on assets and liabilities measured at fair value [Abstract]    
Available-for-sale securities $ 0 $ 4,992,100