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Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2023

Fair Value Disclosures [Abstract]

Schedule of Financial Assets Measured at Fair Value on a Recurring Basis

The Company's financial assets measured at fair value on a recurring basis subject to the disclosure requirements at December 31, 2023 and September 30, 2023, were as follows (in thousands):

																		Gross Unrealized																		Classification on Balance Sheet
December 31, 2023						Fair Value Level						Cost or Amortized Cost						Gains						Losses						Aggregate Fair Value						Cash and Cash Equivalents						Short-Term Investments						Long-Term Investments
Changes in fair value recorded in other comprehensive income
Money Market Funds						Level 1						$	383,794					$	—					$	—					$	383,794					$	383,794					$	—					$	—
Corporate bonds and notes						Level 2						3,227						—						(40)						3,187						—						3,187						—
Municipal bonds and notes						Level 2						100						—						—						100						—						100						—
Total debt investments												$	387,121					$	—					$	(40)					$	387,081					$	383,794					$	3,287					$	—
Changes in fair value recorded in other net income (expense)
Equity investments						*																								$	6,170					$	—					$	—					$	6,170
Total equity investments																														6,170						—						—						6,170
Total investments																														$	393,251					$	383,794					$	3,287					$	6,170

 * The fair value of this equity investment is measured at net asset value ("NAV") which approximates fair value and is not classified within the fair value hierarchy.

																		Gross Unrealized																		Classification on Balance Sheet
September 30, 2023						Fair Value Level						Cost or Amortized Cost						Gains						Losses						Aggregate Fair Value						Cash and Cash Equivalents						Short-Term Investments						Long-Term Investments
Changes in fair value recorded in other comprehensive income
Money Market Funds						Level 1						$	392,592					$	—					$	—					$	392,592					$	392,592					$	—					$	—
Corporate bonds and notes						Level 2						4,412						—						(88)						4,324						—						4,324						—
Municipal bonds and notes						Level 2						1,108						—						(9)						1,099						—						1,099						—
U.S. government agency securities						Level 2						740						—						(3)						737						—						737						—
Total debt investments												$	398,852					$	—					$	(100)					$	398,752					$	392,592					$	6,160					$	—
Changes in fair value recorded in other net income (expense)
Equity investments						*																								$	5,068					$	—					$	—					$	5,068
Total equity investments																														5,068						—						—						5,068
Total investments																														$	403,820					$	392,592					$	6,160					$	5,068

* The fair value of this equity investment is measured at NAV which approximates fair value and is not classified within the fair value hierarchy.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- References

No definition available.

+ Details

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