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Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables set forth the fair value of our financial assets and liabilities measured at fair value on a recurring basis as of April 30, 2015 and January 31, 2015, using the above input categories (in thousands):

		April 30, 2015
		Level 1				Level 2				Level 3				Fair Value
Assets
Cash and cash equivalents:
Corporate paper			—			$	21,695				—			$	21,695
Marketable securities:
Corporate paper			—				40,810				—				40,810
U.S. government agency obligations			—				20,295				—				20,295
Corporate debt securities			—				15,515				—				15,515
Asset-backed securities			—				15,334				—				15,334
U.S. government obligations			—				12,035				—				12,035
Restricted cash:
Certificates of deposit			—				27,165				—				27,165
Money market funds			1,202				—				—				1,202
Total assets measured at fair value		$	1,202			$	152,849			$	—			$	154,051

		January 31, 2015
		Level 1				Level 2				Level 3				Fair Value
Assets
Restricted cash:
Certificates of deposit		$	—			$	3,367			$	—			$	3,367
Total assets measured at fair value		$	—			$	3,367			$	—			$	3,367

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, 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 1

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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