Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2013

Fair Value Measurement [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 January 31, 2013:
Money market funds (1)	$	68,971	$	—	$	—	$	68,971
As of January 31, 2012:
Money market funds (1)		78,669		—		—		78,669

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