Investments (Tables)

12 Months Ended

Jan. 31, 2016

Investments [Abstract]

Summary of investments

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

	January 31, 2016						January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Cash equivalents	$	16,866	$	16,866	$	—	$	23,271	$	23,271	$	—
Total investments	$	16,866	$	16,866	$	—	$	23,271	$	23,271	$	—

Schedule of investments, classified by maturity period

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

	January 31, 2016				January 25, 2015
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	16,866	$	16,866	$	23,271	$	23,271
After 1 year through 5 years	—		—		—		—
Total investments	$	16,866	$	16,866	$	23,271	$	23,271

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 31, 2016		January 25, 2015		January 26, 2014
Unrealized loss, net of tax	$	—	$	—	$	(5	)
Decrease to deferred tax liability	$	—	$	—	$	(2	)

Schedule of cost method investments

The Company has the following investments which are accounted for as cost method investments:

Entity Name	Investment Value
(in thousands)	January 31, 2016
MultiPhy Ltd.	$	12,000
Skorpios Technologies Inc.	3,000
Guangdong Dapu Telecom Technology Co., Ltd.	3,300
Senet, Inc.	1,900
Jariet Technologies Inc.	—
Total	$	20,200