FAIR VALUE MEASUREMENTS (Details)
|
May 31, 2019
USD ($)
Assets
Liabilities
|
Aug. 31, 2018
USD ($)
Assets
Liabilities
|
| Information on assets and liabilities measured at fair value [Abstract] |
|
|
| Held-to-maturity securities |
$ 192,200
|
$ 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) |
$ 12,700
|
$ 66,400
|
| Recurring [Member] | U.S. Treasury Debt Securities [Member] |
|
|
| Information on assets and liabilities measured at fair value [Abstract] |
|
|
| Accumulated unrealized gains and (losses) |
12,700
|
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 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 |
5,997,000
|
8,718,000
|
| 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 |
5,997,000
|
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 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 |
5,997,000
|
8,718,000
|
| 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 |
5,997,000
|
8,718,000
|
| Recurring [Member] | Cost / Other Value [Member] |
|
|
| Information on assets and liabilities measured at fair value [Abstract] |
|
|
| Available-for-sale securities |
5,984,300
|
8,644,900
|
| 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 |
$ 5,984,300
|
$ 8,644,900
|