Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Revenues	$ 48,687us-gaap_Revenues	$ 43,799us-gaap_Revenues
Cost of sales:
Cost of sales	34,067us-gaap_CostOfGoodsAndServicesSold	30,597us-gaap_CostOfGoodsAndServicesSold
Amortization of purchased technology	1,994us-gaap_CostOfGoodsSoldAmortization	2,054us-gaap_CostOfGoodsSoldAmortization
Total cost of sales	36,061us-gaap_CostOfGoodsSold	32,651us-gaap_CostOfGoodsSold
Gross margin	12,626us-gaap_GrossProfit	11,148us-gaap_GrossProfit
Research and development	6,724us-gaap_ResearchAndDevelopmentExpense	8,419us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	7,500	9,596
Intangible asset amortization	1,260us-gaap_AmortizationOfIntangibleAssets	1,297us-gaap_AmortizationOfIntangibleAssets
Restructuring and acquisition-related charges, net	4,135	1,300
Income (loss) from operations	(6,993)us-gaap_OperatingIncomeLoss	(9,464)us-gaap_OperatingIncomeLoss
Interest expense	(217)us-gaap_InterestExpense	(287)us-gaap_InterestExpense
Other income (expense), net	397us-gaap_OtherNonoperatingIncomeExpense	179us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income tax expense (benefit)	(6,813)	(9,572)
Income tax expense (benefit)	240us-gaap_IncomeTaxExpenseBenefit	862us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	$ (7,053)us-gaap_NetIncomeLoss	$ (10,434)us-gaap_NetIncomeLoss
Net income (loss) per share:
Basic (in dollars per share)	$ (0.19)us-gaap_EarningsPerShareBasic	$ (0.35)us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ (0.19)us-gaap_EarningsPerShareDiluted	$ (0.35)us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding:
Basic (in shares)	36,649	29,864
Diluted (in shares)	36,649	29,864

Restructuring and acquisition-related charges consist of costs incurred for employee terminations due to a reduction of personnel resources driven by modifications of business strategy or business emphasis. Employee severance and related costs include severance benefits, notice pay and outplacement services. Restructuring and acquisition-related charges may also include expenses incurred associated with acquisitions or divestiture activities, facility abandonment and asset-related write-offs.

No definition available.