Fair Value Measurements (Tables)

9 Months Ended

Oct. 31, 2015

Fair Value Disclosures [Abstract]

Financial assets measured at fair value on a recurring basis

The Company’s financial assets measured at fair value on a recurring basis are as follows:

	Fair Value Measurements at Reporting Date Using
	Quoted Prices in Active Markets for Identical Assets		Significant Observable Inputs		Significant Unobservable Inputs
October 31, 2015	(Level 1)		(Level 2)		(Level 3)		Total
Available-for-sale securities:
Auction-rate securities	$	—	$	182	$	7,118	$	7,300
Trading securities (including mutual funds)	13,358		—		—		13,358
Totals	$	13,358	$	182	$	7,118	$	20,658

	Fair Value Measurements at Reporting Date Using
	Quoted Prices in Active Markets for Identical Assets		Significant Observable Inputs		Significant Unobservable Inputs
January 31, 2015	(Level 1)		(Level 2)		(Level 3)		Total
Available-for-sale securities:
Auction-rate securities	$	—	$	182	$	7,186	$	7,368
Trading securities (including mutual funds)	14,261		—		—		14,261
Totals	$	14,261	$	182	$	7,186	$	21,629

Financial assets measured at fair value on a recurring basis, unobservable input reconciliation

Changes in the fair value of the Company’s financial assets measured at fair value on a recurring basis are as follows:

	Thirty-Nine Weeks Ended October 31, 2015
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	Available-for-Sale Securities			Trading Securities
	Auction-rate Securities			Mutual Funds		Total
Balance, beginning of year	$	7,186		$	—	$	7,186
Total gains and losses:
Included in other comprehensive income	7			—		7
Purchases, Issuances, Sales, and Settlements:
Sales	(75		)	—		(75		)
Balance, end of quarter	$	7,118		$	—	$	7,118

	Thirty-Nine Weeks Ended November 1, 2014
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	Available-for-Sale Securities			Trading Securities
	Auction-rate Securities			Mutual Funds		Total
Balance, beginning of year	$	9,467		$	—	$	9,467
Total gains and losses:
Included in other comprehensive income	135			—		135
Purchases, Issuances, Sales, and Settlements:
Sales	(925		)	—		(925		)
Balance, end of quarter	$	8,677		$	—	$	8,677