Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2020

Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents information about the Company’s financial assets that were measured at fair value on a recurring basis using the above input categories (in thousands):



	As of April 30, 2020
	Level 1		Level 2		Level 3		Total
	(unaudited)
Assets:
Cash equivalents:
Money market funds	$	497,208	$	—	$	—	$	497,208
Corporate debt securities	—		6,006		—		6,006
Total cash equivalents	497,208		6,006		—		503,214
Short-term investments:
U.S. treasury securities	—		580,077		—		580,077
Corporate debt securities	—		247,479		—		247,479
Total short-term investments	—		827,556		—		827,556
Total cash equivalents and short-term investments	$	497,208	$	833,562	$	—	$	1,330,770



	As of January 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	416,584	$	—	$	—	$	416,584
U.S. treasury securities	—		19,996		—		19,996
Total cash equivalents	416,584		19,996		—		436,580
Short-term investments:
U.S. treasury securities	—		576,598		—		576,598
Corporate debt securities	—		306,378		—		306,378
Total short-term investments	—		882,976		—		882,976
Total cash equivalents and short-term investments	$	416,584	$	902,972	$	—	$	1,319,556

Schedule of Carrying Amounts and Estimated Fair Values of Convertible Note

The following table presents the carrying amounts and estimated fair values of our financial instruments that are not recorded at fair value on the condensed consolidated balance sheets (in thousands):



	As of April 30, 2020
	Net Carrying Amount ⁽¹⁾		Estimated Fair Value
	(unaudited)
2023 convertible senior notes	$	103,911	$	375,264
2025 convertible senior notes	$	859,889	$	1,126,769

⁽¹⁾

Before unamortized debt issuance costs.