Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value of Assets Measured at Fair Value on Recurring Basis

The following tables set forth the fair value of our financial assets measured at fair value on a recurring basis as of July 31 and January 31, 2016, using the above input categories (in thousands):

	July 31, 2016
	Level 1		Level 2		Level 3		Fair Value
Assets
Restricted cash:
Certificates of deposit	$	—	$	26,968	$	—	$	26,968
Money market funds		160		—		—		160
Total assets measured at fair value	$	160	$	26,968	$	—	$	27,128

	January 31, 2016
	Level 1		Level 2		Level 3		Fair Value
Assets
Marketable securities:
Corporate debt securities	$	—	$	5,559	$	—	$	5,559
Asset-backed securities		—		1,820		—		1,820
Restricted cash:
Certificates of deposit		—		26,968		—		26,968
Money market funds		984		—		—		984
Total assets measured at fair value	$	984	$	34,347	$	—	$	35,331