Investments (Tables)

6 Months Ended

Jul. 26, 2015

Investments [Abstract]

Summary Of Investments

The following table summarizes the Company’s cash and available-for-sale investments:

	July 26, 2015						January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Cash equivalents	$	16,859	$	16,859	$	—	$	23,271	$	23,271	$	—
Total investments	$	16,859	$	16,859	$	—	$	23,271	$	23,271	$	—

Schedule Of Investments, Classified By Maturity Period

The following table summarizes the maturities of the Company’s cash and available-for-sale investments:

	July 26, 2015				January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	16,859	$	16,859	$	23,271	$	23,271
After 1 year through 5 years	—		—		—		—
Total investments	$	16,859	$	16,859	$	23,271	$	23,271

Summary Of Unrealized Gains (Losses) On Investments

The following table summarizes net unrealized gains (losses) arising in the periods presented in addition to the tax associated with these comprehensive income items:

	Three Months Ended					Six Months Ended
(in thousands)	July 26, 2015		July 27, 2014			July 26, 2015		July 27, 2014
Unrealized gain (loss), net of tax	$	84	$	(1	)	$	138	$	—
Increase to deferred tax liability	56		(1		)	98		—

Schedule Of Interest Income Generated From Investments

The following table summarizes interest income generated from investments and cash and cash equivalents:

	Three Months Ended				Six Months Ended
(in thousands)	July 26, 2015		July 27, 2014		July 26, 2015		July 27, 2014
Interest income	$	3,447	$	12	$	8,236	$	20

Schedule of Cost Method Equity Investments

Cost Method Investments

(in thousands)	Equity Investment
Balance at January 25, 2015	$	12,148
Additions	1,600
Disposals	(5,384		)
Balance at July 26, 2015	$	8,364

Schedule of Equity Method Investments

Equity Method Investments

(in thousands)	Equity Investment
Balance at January 25, 2015	$	—
Investment in Idosens	30
Balance at July 26, 2015	$	30