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Fair Value Measurements (Tables) | 9 Months Ended
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Jun. 30, 2015
Fair Value Disclosures [Abstract] |
Fair Value of Assets Measured on Recurring Basis | The following tables provide information by level for financial assets that are measured at fair value on a recurring basis (in thousands):
| Total carrying value at |  | Fair Value Measurements Using Inputs Considered as
| June 30, 2015 |  | Level 1 |  | Level 2 |  | Level 3
Cash equivalents: |  |  |  |  |  |  |
Money market | $ | 19,199 |  |  | $ | 19,199 |  |  | $ | — |  |  | $ | — |
Available-for-sale marketable securities: |  |  |  |  |  |  |
Corporate bonds | 31,743 |  |  | — |  |  | 31,743 |  |  | — |
Commercial paper | 3,987 |  |  | — |  |  | 3,987 |  |  | — |
Certificates of deposit | 10,023 |  |  | — |  |  | 10,023 |  |  | — |
Government municipal bonds | 1,245 |  |  | — |  |  | 1,245 |  |  | — |
Total cash equivalents and marketable securities measured at fair value | $ | 66,197 |  |  | $ | 19,199 |  |  | $ | 46,998 |  |  | $ | — |
| Total carrying value at |  | Fair Value Measurements Using Inputs Considered as
| September 30, 2014 |  | Level 1 |  | Level 2 |  | Level 3
Cash equivalents: |  |  |  |  |  |  |
Money market | $ | 19,630 |  |  | $ | 19,630 |  |  | $ | — |  |  | $ | — |
Available-for-sale marketable securities: |  |  |  |  |  |  |
Corporate bonds | 26,694 |  |  | — |  |  | 26,694 |  |  | — |
Commercial paper | 3,997 |  |  | — |  |  | 3,997 |  |  | — |
Certificates of deposit | 13,748 |  |  | — |  |  | 13,748 |  |  | — |
Total cash equivalents and marketable securities measured at fair value | $ | 64,069 |  |  | $ | 19,630 |  |  | $ | 44,439 |  |  | $ | — |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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