| Assets and Liabilities Measured at Fair Value on a Recurring Basis |
The following table provides information on the assets and liabilities measured at fair value on a recurring basis as of May 31, 2019:
| | | | | | | | | Fair Value Measurement Using: | | | | | | | | Fair Value | | | Cost / Other Value | | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | Significant Other Observable Inputs (Level 2) | | | Significant Unobservable Inputs (Level 3) | | | Accumulated Unrealized Gains and (Losses) | | U.S. Treasury debt securities | | $ | 5,997,000 | | | $ | 5,984,300 | | | $ | — | | | $ | 5,997,000 | | | $ | — | | | $ | 12,700 | | Total | | $ | 5,997,000 | | | $ | 5,984,300 | | | $ | — | | | $ | 5,997,000 | | | $ | — | | | $ | 12,700 | |
The following table provides information on the assets and liabilities measured at fair value on a recurring basis as of August 31, 2018:
| | | | | | | | | Fair Value Measurement Using: | | | | | | | | Fair Value | | | Cost / Other Value | | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | Significant Other Observable Inputs (Level 2) | | | Significant Unobservable Inputs (Level 3) | | | Accumulated Unrealized Gains and (Losses) | | U.S. Treasury debt securities | | $ | 8,718,000 | | | $ | 8,644,900 | | | $ | — | | | $ | 8,718,000 | | | $ | — | | | $ | 66,400 | | Total | | $ | 8,718,000 | | | $ | 8,644,900 | | | $ | — | | | $ | 8,718,000 | | | $ | — | | | $ | 66,400 | |
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