Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014
Net sales	$ 263,373us-gaap_SalesRevenueNet	$ 165,804us-gaap_SalesRevenueNet
Cost of sales	146,837us-gaap_CostOfRevenue	94,452us-gaap_CostOfRevenue
Gross profit	116,536us-gaap_GrossProfit	71,352us-gaap_GrossProfit
Selling, general and administrative expenses	50,890	34,787
Engineering, research and development expenses	25,800us-gaap_ResearchAndDevelopmentExpense	15,690us-gaap_ResearchAndDevelopmentExpense
Amortization of intangible assets	12,307us-gaap_AmortizationOfIntangibleAssets	2,336us-gaap_AmortizationOfIntangibleAssets
Operating income	27,539us-gaap_OperatingIncomeLoss	18,539us-gaap_OperatingIncomeLoss
Interest expense	9,841us-gaap_InterestExpense	29us-gaap_InterestExpense
Interest income	(213)us-gaap_InterestIncomeOther	(223)us-gaap_InterestIncomeOther
Other (income) expense, net	(1,733)us-gaap_OtherNonoperatingIncomeExpense	178us-gaap_OtherNonoperatingIncomeExpense
Income before income tax expense and equity in net loss of affiliates	19,644	18,555
Income tax expense	4,670us-gaap_IncomeTaxExpenseBenefit	4,243us-gaap_IncomeTaxExpenseBenefit
Equity in net loss of affiliates	102	0
Net income	$ 14,872us-gaap_NetIncomeLoss	$ 14,312us-gaap_NetIncomeLoss
Basic net income per common share	$ 0.11us-gaap_EarningsPerShareBasic	$ 0.10us-gaap_EarningsPerShareBasic
Diluted net income per common share	$ 0.11us-gaap_EarningsPerShareDiluted	$ 0.10us-gaap_EarningsPerShareDiluted
Weighted shares outstanding:
Basic	139,984	138,927
Diluted	140,740	139,706

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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