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Fair Value (Tables)

3 Months Ended

Apr. 30, 2020

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
		April 30, 2020
		Level 1				Level 2				Level 3				Total
Assets:
Municipal and pre-refunded municipal bonds		$	—			$	53,231			$	—			$	53,231
Corporate bonds			16,831				—				—				16,831
Mutual funds, held in rabbi trust			8,082				—				—				8,082
Certificates of deposit			—				249				—				249
		$	24,913			$	53,480			$	—			$	78,393

		Marketable Securities Fair Value as of
		January 31, 2020
		Level 1				Level 2				Level 3				Total
Assets:
Municipal and pre-refunded municipal bonds		$	—			$	68,984			$	—			$	68,984
Corporate bonds			214,599				—				—				214,599
Mutual funds, held in rabbi trust			8,429				—				—				8,429
Federal government agencies			8,080				—				—				8,080
Certificates of deposit			—				6,460				—				6,460
Commercial paper							1,997				—				1,997
		$	231,108			$	77,441			$	—			$	308,549

		Marketable Securities Fair Value as of
		April 30, 2019
		Level 1				Level 2				Level 3				Total
Assets:
Municipal and pre-refunded municipal bonds		$	—			$	63,186			$	—			$	63,186
Corporate bonds			240,783				—				—				240,783
Mutual funds, held in rabbi trust			7,941				—				—				7,941
Federal government agencies			5,097				—				—				5,097
Certificates of deposit			—				3,053				—				3,053
Commercial paper			—				2,997				—				2,997
		$	253,821			$	69,236			$	—			$	323,057

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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