Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenues	$ 68,178		$ 75,487
Cost of sales:
Cost of sales	46,306		50,005
Amortization of purchased technology	2,217		2,442
Total cost of sales	48,523		52,447
Gross margin	19,655		23,040
Research and development	11,535		12,546
Selling, general and administrative	11,096		12,000
Intangible asset amortization	1,304		1,304
Restructuring and acquisition-related charges, net	1,270		1,444
Income (loss) from operations	(5,550)		(4,254)
Interest expense	(332)		(421)
Other income (expense), net	147		164
Income (loss) before income tax expense (benefit)	(5,735)		(4,511)
Income tax expense (benefit)	822		304
Net income (loss)	$ (6,557)		$ (4,815)
Net income (loss) per share:
Basic	$ (0.23)		$ (0.18)
Diluted	$ (0.23)	[1],[2]	$ (0.18)	[1],[2]
Weighted average shares outstanding:
Basic	28,470		26,656
Diluted	28,470		26,656

[1] (A)For the three months ended March 31, 2013 and 2012, 0.1 million and 1.3 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

[2] For the three months ended March 31, 2013 and 2012, 2.8 million and 3.5 million as-if converted shares associated with the Company's convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive