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Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Summary of Fair Value of Our Money Market Mutual Funds, Municipal Bonds and Certificates of Deposit

Assets measured or disclosed at fair value on a recurring basis consisted of the following:

						Fair Value Measurements Using
		March 31, 2016				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Money market funds		$	32,799			$	32,799			$	—			$	—
Corporate bonds		3,960				3,960				—				—
Municipal bonds		4,900				—				4,900				—
Commercial paper		2,501				—				2,501				—
Certificates of deposit		1,291				—				1,291				—
Total assets at fair value on a recurring basis		$	45,451			$	36,759			$	8,692			$	—

						Fair Value Measurements Using
		September 30, 2015				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Money market funds		$	24,369			$	24,369			$	—			$	—
Corporate bonds		11,594				11,594				—				—
Municipal bonds		13,903				—				13,903				—
Certificates of deposit		4,314				—				4,314				—
Total assets at fair value on a recurring basis		$	54,180			$	35,963			$	18,217			$	—

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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 (b)
-URI http://asc.fasb.org/extlink&oid=66048111&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=66048111&loc=d3e19190-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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