Fair Value of Financial Instruments (Tables)

6 Months Ended

Jul. 29, 2017

Schedule of Assets Measured at Fair Value

Assets measured at fair value were as follows as of January 28, 2017 (in thousands):

	Level 1		Level 2		Total
Cash equivalents
Money market funds	$	2,510	$	—	$	2,510
Commercial paper		—		5,493		5,493
Total cash equivalents		2,510		5,493		8,003
Short-term investments
Commercial paper		—		34,534		34,534
Government agency obligations		2,553		105,590		108,143
Total short-term investments		2,553		140,124		142,677
Long-term investments
Government agency obligations		—		33,212		33,212
Total long-term investments		—		33,212		33,212
Total	$	5,063	$	178,829	$	183,892

Schedule of Available-for-sale Securities Maturities

The following table summarizes the amortized cost and estimated fair value of the available-for-sale securities within the Company’s investment portfolio as of January 28, 2017 based on stated maturities, which are recorded within cash and cash equivalents, short-term investments and long-term investments on the condensed consolidated balance sheets (in thousands):

	Cost		Fair Value
Range of maturity
Due within 1 year	$	148,155	$	148,170
Due in 1 to 2 years	$	33,238	$	33,212

Estimated Fair Value and Carrying Value of Notes

The estimated fair value and carrying value of the 2019 Notes and 2020 Notes (carrying value excludes the equity component of the 2019 Notes and 2020 Notes classified in stockholders’ equity) were as follows (in thousands):

	July 29,				January 28,
	2017				2017
	Fair Value		Carrying Value		Fair Value		Carrying Value
Convertible senior notes due 2019	$	308,012	$	321,696	$	295,381	$	314,543
Convertible senior notes due 2020	$	244,178	$	247,742	$	232,463	$	239,876