Investments (Tables)

12 Months Ended

Jan. 27, 2013

Investments [Abstract]

Summary of investments

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

	January 27, 2013						January 29, 2012
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Agency securities	$	7,907	$	7,900	$	7	$	26,132	$	26,110	$	22
Corporate issues	—		—		—		4,511		4,484		27
Bank time deposits	4,973		4,973		—		70,000		70,000		—
Total investments	$	12,880	$	12,873	$	7	$	100,643	$	100,594	$	49

Schedule of investments, classified by maturity period

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

	January 27, 2013				January 29, 2012
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	4,973	$	4,973	$	83,121	$	83,085
After 1 year through 5 years	7,907		7,900		17,522		17,509
Total investments	$	12,880	$	12,873	$	100,643	$	100,594

Summary of unrealized gains (losses) on investments

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

	Fiscal Year Ended
(in thousands)	January 27, 2013			January 29, 2012			January 30, 2011
Unrealized loss, net of tax	$	(32	)	$	(204	)	$	(76	)
Decrease to deferred tax liability	$	(10	)	$	(58	)	$	(41	)

Schedule of interest income generated from investments

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

	Fiscal Year Ended
(in thousands)	January 27, 2013		January 29, 2012		January 30, 2011
Interest income	$	404	$	1,213	$	1,051

During fiscal year 2013, the Company acquired an investment in a privately traded company for total cash consideration of $2.5 million. The Company accounts for the investment in equity interests under the cost method of accounting since it does not have the ability to exercise significant influence over the investee. The investment in equity interests is included in “Other assets” on the consolidated balance sheet as of January 27, 2013.