Geographic Information and Concentration of Risk (Tables)

12 Months Ended

Jan. 26, 2014

Risks and Uncertainties [Abstract]

Schedule of net sales by product line

The table below provides net sales activity by product line on a comparative basis for all periods. In December 2013, the Company announced that it was combining its Gennum and Advanced Communication product groups. The combined net sales activity for these groups is reflected in the Signal Integrity and Timing product group.

	Fiscal Year Ended
(in thousands, except percentages)	January 26, 2014				January 27, 2013				January 29, 2012
Signal Integrity and Timing	$	288,374	49	%	$	263,090	45	%	$	139,695	29	%
Protection	198,514		33	%	198,866		34	%	209,726		44	%
Power Management and High Reliability	58,295		10	%	66,427		12	%	74,056		15	%
Wireless and Sensing	49,794		8	%	50,444		9	%	57,124		12	%
Total net sales	$	594,977	100	%	$	578,827	100	%	$	480,601	100	%

Schedule of net sales by geographic region

Net sales activity by geographic region is as follows:

	Fiscal Year Ended
(in thousands, except percentages)	January 26, 2014				January 27, 2013				January 29, 2012
Asia-Pacific	$	432,097	73	%	$	405,179	70	%	$	298,477	62	%
North America	94,574		16	%	98,401		17	%	114,552		24	%
Europe	68,306		11	%	75,247		13	%	67,572		14	%
Total net sales	$	594,977	100	%	$	578,827	100	%	$	480,601	100	%

Schedule of sales activity to countries representing greater than 10% of total sales

The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods indicated:

	Fiscal Year Ended
(percentage of total sales)	January 26, 2014		January 27, 2013		January 29, 2012
China (including Hong Kong)	34	%	35	%	38	%
United States	16	%	17	%	20	%
Japan	11	%	10	%	8	%
South Korea	11	%	7	%	8	%
Total net sales	72	%	69	%	74	%

Schedule of income (loss) from continuing operations before income taxes

The Company’s regional (loss) income from continuing operations before income taxes is as follows:

	Fiscal Year Ended
(in thousands)	January 26, 2014			January 27, 2013			January 29, 2012
Domestic	$	(158,780	)	$	(19,867	)	$	(3,070	)
Foreign	30,299			20,116			97,249
Total	$	(128,481	)	$	249		$	94,179

Schedule of long-lived assets

Long-lived assets, which consist of property, plant and equipment, net of accumulated depreciation and classified by location are summarized as follows:

(in thousands)	January 26, 2014		January 27, 2013
United States	$	55,303	$	53,858
Rest of North America	28,577		25,772
Europe	14,900		10,701
Asia and all others	11,341		11,506
Total	$	110,121	$	101,837

Schedule of concentration risk of net sales

Each of the following significant customers accounted for at least 10% of net sales for at least one of the periods indicated:

	Fiscal Year Ended
(percentage of net sales)	January 26, 2014		January 27, 2013		January 29, 2012
Samsung Electronics Co., Ltd.(and affiliates)	12	%	12	%	13	%
Huawei Technologies Co., Ltd (and affiliates)	9	%	10	%	7	%
Frontek Technology Corp	5	%	6	%	10	%

Schedule of concentration risk of accounts receivable

The following table shows the list of customers that have an outstanding receivable balance that represents at least 10% of total net receivables for at least one of the periods indicated:

	Balance as of
(percentage of net accounts receivable)	January 26, 2014		January 27, 2013
Samsung Electronics Co., Ltd.(and affiliates)	13	%	12	%
Huawei Technologies Co., Ltd (and affiliates)	9	%	14	%