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Fair Value (Tables)

6 Months Ended

Jul. 31, 2025

Fair Value Disclosures [Abstract]

Financial Assets Measured at Fair Value on Recurring Basis

The Company’s financial assets that are accounted for at fair value on a recurring basis are presented in the tables below:

		Marketable Securities Fair Value as of
		July 31, 2025
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	—			$	406,811			$	—			$	406,811
US Treasury securities			—				97,520				—				97,520
Federal government agencies			—				70,079				—				70,079
Municipal and pre-refunded municipal bonds			—				53,037				—				53,037
Mutual funds, held in rabbi trust			20,376				—				—				20,376
Commercial paper			—				7,928				—				7,928
Certificates of deposit			—				1,249				—				1,249
		$	20,376			$	636,624			$	—			$	657,000

		Marketable Securities Fair Value as of
		January 31, 2025
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	—			$	419,937			$	—			$	419,937
US Treasury securities			—				98,398				—				98,398
Federal government agencies			—				104,014				—				104,014
Municipal and pre-refunded municipal bonds			—				68,631				—				68,631
Mutual funds, held in rabbi trust			17,904				—				—				17,904
Commercial paper			—				9,774				—				9,774
Certificates of deposit			—				11,499				—				11,499
		$	17,904			$	712,253			$	—			$	730,157

		Marketable Securities Fair Value as of
		July 31, 2024
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	—			$	258,930			$	—			$	258,930
US Treasury securities			—				79,197				—				79,197
Federal government agencies			—				109,279				—				109,279
Municipal and pre-refunded municipal bonds			—				72,326				—				72,326
Mutual funds, held in rabbi trust			17,693				—				—				17,693
Commercial paper			—				2,905				—				2,905
Certificates of deposit			—				21,499				—				21,499
		$	17,693			$	544,136			$	—			$	561,829

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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/2009/role/commonPracticeRef
-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

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-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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Namespace Prefix:	us-gaap_
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