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Basis of Presentation and Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended
	Oct. 03, 2015 USD ($) Contract	Sep. 27, 2014	Oct. 03, 2015 USD ($) Contract	Sep. 27, 2014	Jan. 03, 2015 USD ($)
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivative, Number of Instruments Held \| Contract	1		1
Risks and Uncertainties [Abstract]
Allowance for doubtful accounts	$ 900,000		$ 900,000		$ 900,000
Deferred Revenue and Credits [Abstract]
Inventory valued at published list price and held by sell-through distributors with right of return	48,205,000		48,205,000		50,854,000
Allowance for distributor advances	(22,890,000)		(22,890,000)		(29,490,000)
Deferred cost of sales related to inventory held by sell-through distributors	(4,888,000)		(4,888,000)		(6,418,000)
Total Deferred income and allowances on sales to sell-through distributors	$ 20,427,000		$ 20,427,000		14,946,000
Fiscal Period Duration, Three Months			91 days
Fiscal Period Duration, Nine Months			273 days
Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	9.00%		11.00%
Sales Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	31.00%	41.00%	33.00%	46.00%
Sell-Through Distributors [Member] \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	46.00%	51.00%	45.00%	44.00%
Derivative One [Member]
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivative, Number of Instruments Held \| Contract	3		3
Not designated as effective hedges for accounting purposes \| Foreign exchange contracts
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Open foreign exchange contracts - notional amounts	$ 1,694,000		$ 1,694,000		$ 4,200,000
Minimum
Basis of Presentation and Significant Accounting Policies [Line Items]
Fiscal year duration (52 weeks or 53 weeks)			364 days
Maximum
Basis of Presentation and Significant Accounting Policies [Line Items]
Fiscal year duration (52 weeks or 53 weeks)			371 days
Term of maturities of investments considered cash and cash equivalents			3 months
Customer A \| Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk		18.00%		21.00%
Customer B \| Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk		10.00%		12.00%
Other Nonoperating Income (Expense) [Member]
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Gain on foreign exchange contracts adjusted to fair value through earnings - less than			$ 100,000