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Available-For-Sale Securities | 12 Months Ended
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Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract] |
Available-For-Sale Securities | Note 6 — Available-For-Sale Securities In fiscal year 2019 the Company sold most of its available-for-sale securities, in total amount of $101,287, the realized losses recognized from this sale were immaterial and were recorded in the consolidated statements of income. Available-for-sale securities consist of the following interest-bearing investments:
|  | As of September 30, 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Money market funds |  | $ | 69,370 |  |  | $ | — |  |  | $ | — |  |  | $ | 69,370 |
Total(1) |  | $ | 69,370 |  |  | $ | — |  |  | $ | — |  |  | $ | 69,370 |
(1) | Available-for-sale securities with maturities longer than 90 days from the date of acquisition were classified as short-term interest-bearing investments and available-for-sale securities with maturities of 90 days or less from the date of acquisition were included in cash and cash equivalents on the Company’s balance sheet. As of September 30, 2019, all the securities were classified as cash and cash equivalents.
|  | As of September 30, 2018 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Corporate bonds |  | $ | 48,252 |  |  | $ | — |  |  | $ | 721 |  |  | $ | 47,531 |
Money market funds |  |  | 30,883 |  |  |  | — |  |  |  | — |  |  |  | 30,883 |
U.S. government treasuries |  |  | 23,656 |  |  |  | — |  |  |  | 398 |  |  |  | 23,258 |
U.S. agency securities |  |  | 16,297 |  |  |  | — |  |  |  | 264 |  |  |  | 16,033 |
Asset backed obligations |  |  | 9,312 |  |  |  | — |  |  |  | 135 |  |  |  | 9,177 |
Supranational and sovereign debt |  |  | 4,508 |  |  |  | — |  |  |  | 74 |  |  |  | 4,434 |
Total(1) |  | $ | 132,908 |  |  | $ | — |  |  | $ | 1,592 |  |  | $ | 131,316 |
(1) | Available-for-sale securities with maturities longer than 90 days from the date of acquisition were classified as short-term interest-bearing investments and available-for-sale securities with maturities of 90 days or less from the date of acquisition were included in cash and cash equivalents on the Company’s balance sheet. As of September 30, 2018, $100,433 of securities were classified as short-term interest-bearing investments and $30,883 of securities were classified as cash and cash equivalents.
As of September 30, 2019, the unrealized losses attributable to the Company’s available-for-sale securities were primarily due to credit spreads and interest rate movements. The Company assessed whether such unrealized losses for the investments in its portfolio were other-than-temporary. Based on this assessment, the Company did not recognize any credit losses in fiscal years 2019, 2018 and 2017. As of September 30, 2019, the Company’s available-for-sale securities had the following maturity dates:
|  | Market Value |
Due within one year |  | $ | 69,370 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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