Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Apr. 30, 2020

Cash and Cash Equivalents [Abstract]

Schedule of Fair Values of Cash Equivalents

The following are the fair values of our cash equivalents and marketable securities as of April 30, 2020 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	88,990	$	—	$	—	$	88,990
Marketable securities:
Asset-backed securities	38,823		338		—		39,161
Corporate notes and obligations	197,496		1,454		(26)		198,924
Commercial paper	51,093		22		(3)		51,112
Municipal securities	12,855		134		(7)		12,982
Certificates of deposit	29,997		44		(48)		29,993
U.S. treasury securities	22,035		194		—		22,229
Total cash equivalents and marketable securities	$	441,289	$	2,186	$	(84)	$	443,391

The following are the fair values of our cash equivalents and marketable securities as of January 31, 2020 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	34,596	$	—	$	—	$	34,596
Marketable securities:
Asset-backed securities	68,194		235		—		68,429
Corporate notes and obligations	199,226		891		—		200,117
Commercial paper	46,460		7		—		46,467
Municipal securities	20,865		65		—		20,930
Certificates of deposit	14,996		19		—		15,015
U.S. treasury securities	24,563		33		—		24,596
Total cash equivalents and marketable securities	$	408,900	$	1,250	$	—	$	410,150

Schedule of Fair Values of Marketable Securities

The following are the fair values of our cash equivalents and marketable securities as of April 30, 2020 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	88,990	$	—	$	—	$	88,990
Marketable securities:
Asset-backed securities	38,823		338		—		39,161
Corporate notes and obligations	197,496		1,454		(26)		198,924
Commercial paper	51,093		22		(3)		51,112
Municipal securities	12,855		134		(7)		12,982
Certificates of deposit	29,997		44		(48)		29,993
U.S. treasury securities	22,035		194		—		22,229
Total cash equivalents and marketable securities	$	441,289	$	2,186	$	(84)	$	443,391

The following are the fair values of our cash equivalents and marketable securities as of January 31, 2020 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	34,596	$	—	$	—	$	34,596
Marketable securities:
Asset-backed securities	68,194		235		—		68,429
Corporate notes and obligations	199,226		891		—		200,117
Commercial paper	46,460		7		—		46,467
Municipal securities	20,865		65		—		20,930
Certificates of deposit	14,996		19		—		15,015
U.S. treasury securities	24,563		33		—		24,596
Total cash equivalents and marketable securities	$	408,900	$	1,250	$	—	$	410,150

Schedule of Contractual Maturities of Investments in Available-for-Sale Securities

The contractual maturities of investments in available-for-sale securities were as follows (in thousands):

	April 30, 2020				January 31, 2020
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due within one year	$	341,399	$	342,437	$	273,582	$	274,058
Due after one year through five years	99,890		100,954		135,318		136,092
Total investments in marketable securities	$	441,289	$	443,391	$	408,900	$	410,150