Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenues	$ 54,109		$ 63,725		$ 187,725		$ 216,796
Cost of sales:
Cost of sales	37,874		43,687		127,936		142,234
Amortization of purchased technology	2,069		2,390		6,504		7,223
Total cost of sales	39,943		46,077		134,440		149,457
Gross margin	14,166		17,648		53,285		67,339
Research and development	11,456		11,845		35,011		36,104
Selling, general and administrative	10,522		11,793		31,145		33,966
Intangible asset amortization	1,303		1,303		3,911		3,911
Goodwill, Impairment Loss	0		29,748		0		29,748
Restructuring and acquisition-related charges, net	2,881		(2,717)		4,037		(234)
Income (loss) from operations	(11,996)		(34,324)		(20,819)		(36,156)
Interest expense	(300)		(436)		(913)		(1,279)
Other income (expense), net	200		22		573		312
Income (loss) before income tax expense (benefit)	(12,096)		(34,738)		(21,159)		(37,123)
Income tax expense (benefit)	624		373		2,230		1,496
Net income (loss)	$ (12,720)		$ (35,111)		$ (23,389)		$ (38,619)
Net income (loss) per share:
Basic (in dollars per share)	$ (0.44)		$ (1.28)		$ (0.82)		$ (1.43)
Diluted (in dollars per share)	$ (0.44)	[1],[2],[3],[4]	$ (1.28)	[1],[2],[3],[4]	$ (0.82)	[1],[2],[3],[4]	$ (1.43)	[1],[2],[3],[4]
Weighted average shares outstanding:
Basic (in shares)	28,931		27,534		28,692		26,985
Diluted (in shares)	28,931		27,534		28,692		26,985

[1] (A)For the three months ended September 30, 2013, there were no remaining contingently issuable shares outstanding. For the three months ended September 30, 2012, 0.8 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive. For the nine months ended September 30, 2013 and 2012, 20,000 and 1.1 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

[2] For the three months ended September 30, 2013 and 2012, 2.1 million and 3.8 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. For the nine months ended September 30, 2013 and 2012, 2.3 million and 3.6 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

[3] For the three and nine months ended September 30, 2013, the Company excluded 1.5 million restricted stock units granted under the Long-Term Incentive Plan ("LTIP") as the performance criteria required for issuance of the awards was not satisfied as of these dates. For the three and nine months ended September 30, 2013, the Company excluded 0.2 million restricted stock units granted under the Overlay Plan of the 2007 Stock Plan, as the awards had been earned but not vested as of these dates.

[4] For the three and nine months ended September 30, 2013 and 2012, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2013 2012 2013 2012Stock options3,561 2,476 3,561 2,476Restricted stock units376 658 376 658Performance based restricted stock units (D)1,678 1,050 1,678 1,050Total equity award shares excluded5,615 4,184 5,615 4,184