Fair Value Measurements (Tables)

12 Months Ended

Jul. 31, 2021

Schedule of Amortized Cost, Gross Unrealized Gains (Losses) and Fair Value of Available-for-sale Investments

The following table sets forth the amortized cost, gross unrealized gains, gross unrealized losses and fair values of our short-term and long-term investments accounted for as available-for-sale securities as of July 31, 2021, and August 1, 2020:


	July 31, 2021								August 1, 2020
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Financial Assets:
Investments:
U.S. Treasury securities	$	42,009	$	35	$	—	$	42,044	$	67,335	$	516	$	(1)	$	67,850
Certificates of deposit	1,500		—		—		1,500		6,150		—		—		6,150
Commercial paper	10,192		—		—		10,192		35,331		—		—		35,331
Asset-backed securities	10,393		18		(9)		10,402		44,854		410		(4)		45,260
Corporate bonds	96,347		103		(7)		96,443		82,821		723		(1)		83,543
Total	$	160,441	$	156	$	(16)	$	160,581	$	236,491	$	1,649	$	(6)	$	238,134

Schedule of Fair Value of Available-for-sale Securities By Contractual Maturity

The following table sets forth the fair value of available-for-sale securities by contractual maturity as of July 31, 2021, and August 1, 2020:


	July 31, 2021								August 1, 2020
(in thousands)	One Year or Less		Over One Year Through Five Years		Over Five Years		Total		One Year or Less		Over One Year Through Five Years		Over Five Years		Total
Financial Assets:
Investments:
U.S. Treasury securities	$	41,633	$	411	$	—	$	42,044	$	38,794	$	29,056	$	—	$	67,850
Certificates of deposit	1,500		—		—		1,500		6,150		—		—		6,150
Commercial paper	10,192		—		—		10,192		35,331		—		—		35,331
Asset-backed securities	29		10,373		—		10,402		6,657		38,603		—		45,260
Corporate bonds	48,192		48,251		—		96,443		56,105		27,438		—		83,543
Total	$	101,546	$	59,035	$	—	$	160,581	$	143,037	$	95,097	$	—	$	238,134

Schedule of Short-term and Long-term Investments Accounted for as Available-for-sale Measured at Fair Value on Recurring Basis

The following table sets forth our cash equivalents, and short-term and long-term investments accounted for as available-for-sale securities that were measured at fair value on a recurring basis based on the fair value hierarchy as of July 31, 2021, and August 1, 2020:


	July 31, 2021								August 1, 2020
(in thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Financial Assets:
Cash equivalents:
Money market funds	$	10,728	$	—	$	—	$	10,728	$	2,394	$	—	$	—	$	2,394

Commercial paper	—		—		—		—		—		—		—		—
Investments:
U.S. Treasury securities	42,044		—		—		42,044		67,850		—		—		67,850
Certificates of deposit	—		1,500		—		1,500		—		6,150		—		6,150
Commercial paper	—		10,192		—		10,192		—		35,331		—		35,331
Asset-backed securities	—		10,402		—		10,402		—		45,260		—		45,260
Corporate bonds	—		96,443		—		96,443		—		83,543		—		83,543
Total	$	52,772	$	118,537	$	—	$	171,309	$	70,244	$	170,284	$	—	$	240,528