Investments (Tables)

9 Months Ended

Oct. 25, 2015

Investments [Abstract]

Summary Of Investments

The following table summarizes the Company’s investments:

	October 25, 2015						January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Cash equivalents	$	16,860	$	16,860	$	—	$	23,271	$	23,271	$	—
Total investments	$	16,860	$	16,860	$	—	$	23,271	$	23,271	$	—

Schedule Of Investments, Classified By Maturity Period

The following table summarizes the maturities of the Company’s investments:

	October 25, 2015				January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	16,860	$	16,860	$	23,271	$	23,271
After 1 year through 5 years	—		—		—		—
Total investments	$	16,860	$	16,860	$	23,271	$	23,271

Summary Of Unrealized Gains (Losses) On Investments

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

	Three Months Ended				Nine Months Ended
(in thousands)	October 25, 2015		October 26, 2014		October 25, 2015		October 26, 2014
Unrealized gain, net of tax	$	129	$	—	$	266	$	—
Increase to deferred tax liability	74		—		172		—

Schedule Of Interest Income Generated From Investments

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

	Three Months Ended				Nine Months Ended
(in thousands)	October 25, 2015		October 26, 2014		October 25, 2015		October 26, 2014
Interest income	$	1,195	$	13	$	9,431	$	33