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Fair Value (Tables)

9 Months Ended

Oct. 31, 2017

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
		October 31, 2017
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	97,172			$	—			$	—			$	97,172
Municipal and pre-refunded    municipal bonds			—				26,026				—				26,026
Mutual funds, held in rabbi trust			5,746				—				—				5,746
Certificates of deposit			—				5,538				—				5,538
		$	102,918			$	31,564			$	—			$	134,482

		Marketable Securities Fair Value as of
		January 31, 2017
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	78,398			$	—			$	—			$	78,398
Municipal and pre-refunded    municipal bonds			—				71,261				—				71,261
Mutual funds, held in rabbi trust			4,673				—				—				4,673
Certificates of deposit			—				1,023				—				1,023
		$	83,071			$	72,284			$	—			$	155,355

		Marketable Securities Fair Value as of
		October 31, 2016
		Level 1				Level 2				Level 3				Total
Assets:
Corporate bonds		$	18,014			$	—			$	—			$	18,014
Municipal and pre-refunded    municipal bonds			—				7,160				—				7,160
Mutual funds, held in rabbi trust			4,447				—				—				4,447
Certificates of deposit			—				628				—				628
		$	22,461			$	7,788			$	—			$	30,249

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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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Namespace Prefix:	us-gaap_
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Balance Type:	na
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