Cash, Cash Equivalents and Marketable Securities

12 Months Ended

Jan. 29, 2022

Cash And Cash Equivalents [Abstract]

Cash, Cash Equivalents and Marketable Securities

4. Cash, Cash Equivalents and Marketable Securities

The following tables summarize the estimated fair value of our cash, cash equivalents and marketable securities and the gross unrealized holding gains and losses (in thousands):

	January 29, 2022
	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	99,333	$	—	$	—		$	99,333
Money market funds		17,890		—		—			17,890
Total cash and cash equivalents		117,223		—		—			117,223
Marketable securities:
U.S. treasury and government agency securities		29,218		33		(819	)		28,432
Corporate debt securities		123,611		436		(851	)		123,196
State and local government securities		25,722		62		(152	)		25,632
Total marketable securities	$	178,551	$	531	$	(1,822	)	$	177,260

	January 30, 2021
	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	43,407	$	—	$	—		$	43,407
Money market funds		19,267		—		—			19,267
Corporate debt securities		10,948		—		—			10,948
Total cash and cash equivalents		73,622		—		—			73,622
Marketable securities:
U.S. treasury and government agency securities		53,856		478		(24	)		54,310
Corporate debt securities		220,558		2,352		(38	)		222,872
State and local government securities		24,363		375		—			24,738
Total marketable securities	$	298,777	$	3,205	$	(62	)	$	301,920

All of our available-for-sale debt securities have an effective maturity date of five years or less and may be liquidated, at our discretion, prior to maturity.

The following tables summarize the gross unrealized holding losses and fair value for investments in an unrealized loss position, and the length of time that individual securities have been in a continuous loss position (in thousands):

	January 29, 2022
	Less Than Twelve Months					12 Months or Greater					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Marketable securities:
U.S. treasury and government agency securities	$	20,683	$	(785	)	$	1,622	$	(34	)	$	22,305	$	(819	)
Corporate debt securities		63,887		(849	)		69		(2	)		63,956		(851	)
State and local government securities		15,639		(152	)		-		-			15,639		(152	)
Total marketable securities	$	100,209	$	(1,786	)	$	1,691	$	(36	)	$	101,900	$	(1,822	)

	January 30, 2021
	Less Than Twelve Months					12 Months or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Marketable securities:
U.S. treasury and government agency securities	$	3,653	$	(24	)	$	—	$	—	$	3,653	$	(24	)
Corporate debt securities		36,068		(38	)		-		-		36,068		(38	)
Total marketable securities	$	39,721	$	(62	)	$	—	$	—	$	39,721	$	(62	)

We did not record a realized loss for other-than-temporary impairments during the fiscal years ended January 29, 2022, January 30, 2021 and February 1, 2020.