Cash, Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Apr. 29, 2017

Cash And Cash Equivalents [Abstract]

Summary of Estimated Fair Value of 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):

	April 29, 2017
	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	21,594	$	—	$	—		$	21,594
Money market funds		726		—		—			726
Total cash and cash equivalents		22,320		—		—			22,320
Marketable securities:
State and local government securities		33,139		19		(23	)		33,135
Variable-rate demand notes		21,040		—		—			21,040
Total marketable securities	$	54,179	$	19	$	(23	)	$	54,175

	January 28, 2017
	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	19,190	$	—	$	—		$	19,190
Money market funds		657		—		—			657
State and local government securities		400		—		—			400
Total cash and cash equivalents		20,247		—		—			20,247
Marketable securities:
State and local government securities		19,151		8		(30	)		19,129
Variable-rate demand notes		39,450		—		—			39,450
Total marketable securities	$	58,601	$	8	$	(30	)	$	58,579

Summary of Gross Unrealized Holding Losses and Fair Value for Investments in an Unrealized Loss Position

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):

	April 29, 2017
	Less Than 12 Months					12 Months or Greater					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Marketable securities:
State and local government securities		15,477		(13	)		1,343		(10	)		16,820		(23	)
Total marketable securities	$	15,477	$	(13	)	$	1,343	$	(10	)	$	16,820	$	(23	)

	January 28, 2017
	Less Than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Marketable securities:
State and local government securities		8,702		(30	)		-		-		8,702		(30	)
Total marketable securities	$	8,702	$	(30	)	$	-	$	-	$	8,702	$	(30	)