v2.4.0.8

Segment Information, Operations By Geographic Area And Customer Concentration (Schedule Of Reportable Segment And Reconciliation Of Segment Contribution Income To Income Before Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 29, 2013		Sep. 30, 2012		Sep. 29, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Total net revenues	$ 361,895		$ 315,210		$ 1,013,013		$ 961,485
Total segment contribution income	48,694		49,040		140,941		148,684
Corporate and unallocated costs	(12,800)		(12,866)		(38,824)		(36,430)
Amortization of intangible assets	(4,439)	[1]	(1,354)	[1]	(10,782)	[1]	(3,317)	[1]
Stock-based compensation expense	(4,511)		(4,019)		(12,492)		(10,806)
Restructuring and other charges	(400)		0		(1,957)		0
Acquisition-related expense	0		0		(924)		0
Impact to cost of sales from acquisition accounting adjustments to inventory	0		0		(568)		0
Litigation reserves, net	(305)		(269)		(3,908)		(420)
Impairment charges	(2,000)		0		(2,000)		0
Interest income	71		109		315		344
Other income, net	511		3,070		37		2,823
Income before income taxes	24,821		33,711		69,838		100,878
Retail [Member]
Segment Reporting Information [Line Items]
Total net revenues	130,301		123,457		374,018		366,258
Total segment contribution income	19,317		17,759		53,696		62,590
Segment contribution margin (in percentage)	14.80%		14.40%		14.40%		17.10%
Commercial [Member]
Segment Reporting Information [Line Items]
Total net revenues	76,957		79,240		236,254		234,498
Total segment contribution income	16,903		19,998		51,190		52,272
Segment contribution margin (in percentage)	22.00%		25.20%		21.70%		22.30%
Service Provider [Member]
Segment Reporting Information [Line Items]
Total net revenues	154,637		112,513		402,741		360,729
Total segment contribution income	$ 12,474		$ 11,283		$ 36,055		$ 33,822
Segment contribution margin (in percentage)	8.10%		10.00%		9.00%		9.40%
[1] Amount excludes amortization expense related to patents within purchased intangible assets in costs of revenues.

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Amortization of intangible assets excluding patents

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Corporate and unallocated costs

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Impact to cost of sales from acquisition accounting adjustments to inventory

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Restructuring and other charges not specified within the taxonomy.

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Segment Contribution Margin

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Total segment contribution income

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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