Cash Equivalents and Marketable Securities

9 Months Ended

Oct. 31, 2019

Cash Equivalents And Marketable Securities [Abstract]

Cash Equivalents and Marketable Securities

As of October 31, 2019 and January 31, 2019, our cash equivalents and marketable securities consisted of the following:


	October 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	99,494	$	—	$	—	$	99,494



Cash equivalents	99,494		—		—		99,494
Commercial paper	48,841		—		—		48,841
Agency bonds	78,963		12		(84)		78,891
Corporate and other debt securities	296,419		597		(37)		296,979
U.S. government agency securities	106,224		143		(2)		106,365
Treasury bills	49,428		22		—		49,450
Marketable securities	$	579,875	$	774	$	(123)	$	580,526


	January 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value

	(in thousands)
Money market funds	$	78	$	—	$	—	$	78
Cash equivalents	78		—		—		78
Commercial paper	1,243		—		—		1,243
Corporate bonds	53,267		—		(53)		53,214
Agency bonds	32,675		—		(71)		32,604
U.S. government agency securities	24,028		—		(11)		24,017
Treasury bills	1,699		—		—		1,699
Marketable securities	$	112,912	$	—	$	(135)	$	112,777

We review the individual securities that have unrealized losses on a regular basis to evaluate whether or not any security has experienced an other-than-temporary decline in fair value. We evaluate, among other factors, whether we have the intention to sell any of these marketable securities and whether it is more likely than not that we will be required to sell any of them before recovery of the amortized cost basis. Based on the available evidence, we concluded that the gross unrealized losses on the marketable securities as of October 31, 2019 and January 31, 2019, are temporary in nature. There were no material realized gains or losses from available-for-sale securities that were reclassified out of accumulated other comprehensive income (loss) for the three and nine months ended October 31, 2019 and 2018.

The following table presents the contractual maturities of our marketable securities as of October 31, 2019 and January 31, 2019:


	As of
	October 31, 2019		January 31, 2019

	(in thousands)
Less than one year	$	370,873	$	85,077
Due in one to five years	209,653		27,700
Total	$	580,526	$	112,777