Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2013

Fair Value Measurements [Abstract]

Summary of assets and liabilities measured at fair value on a recurring basis

The following table represents the Company’s financial instruments measured at fair value on a recurring basis (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)		Total
As of April 30, 2013:
Money market funds (1)	$	76,295	$	—	$	—	$	76,295
As of January 31, 2013:
Money market funds (1)		68,971		—		—		68,971

(1) Included in cash and cash equivalents on the condensed consolidated balance sheets