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Investments | 6 Months Ended
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Mar. 31, 2017
Investments All Other Investments [Abstract] |
Investments | NOTE 3. INVESTMENTS The Company invests a portion of its excess cash balances in short-term debt securities and may, from time to time, also invest in long-term debt securities. Investments at March 31, 2017 consisted of corporate bonds with maturities remaining of less than one year. The Company may also invest excess cash balances in certificates of deposit, money market accounts, U.S. Treasuries, U.S. government agency obligations, corporate debt securities, and/or commercial paper. The Company accounts for its investments in accordance with FASB ASC 320, Investments – Debt and Equity Securities. At March 31, 2017, all investments were classified as held-to-maturity securities. The following tables summarize the Company’s short- and long-term investments as of March 31, 2017, and September 30, 2016.
| As of March 31, 2017 |
| Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Commercial notes (due within one year) | $ | 24,910,492 |  |  | $ | — |  |  | $ | (130,319 | ) |  | $ | 24,780,173 |
Total | $ | 24,910,492 |  |  | $ | — |  |  | $ | (130,319 | ) |  | $ | 24,780,173 |
| As of September 30, 2016 |
| Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Commercial notes (due within one year) | $ | — |  |  |  | — |  |  | $ | — |  |  | $ | — |
Total | $ | — |  |  |  | — |  |  | $ | — |  |  | $ | — |

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