Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Revenues	$ 63,725		$ 97,876		$ 216,796		$ 251,359
Cost of sales:
Cost of sales	43,687		66,610		142,234		173,777
Amortization of purchased technology	2,390		3,283		7,223		5,610
Total cost of sales	46,077		69,893		149,457		179,387
Gross margin	17,648		27,983		67,339		71,972
Research and development	11,845		12,955		36,104		31,562
Selling, general and administrative	11,793		15,610		33,966		37,520
Intangible asset amortization	1,303		1,234		3,911		1,618
Goodwill, Impairment Loss	29,748		0		29,748		0
Restructuring and acquisition-related charges, net	(2,717)		5,758		(234)		8,279
Gain on the liquidation of a foreign subsidiary	0		(2,081)		0		(2,081)
Income (loss) from operations	(34,324)		(5,493)		(36,156)		(4,926)
Interest expense	(436)		(458)		(1,279)		(1,410)
Other income (expense), net	22		333		312		284
Income (loss) before income tax expense (benefit)	(34,738)		(5,618)		(37,123)		(6,052)
Income tax expense (benefit)	373		(11,079)	[1]	1,496		(11,174)	[1]
Net income (loss)	$ (35,111)		$ 5,461		$ (38,619)		$ 5,122	[2]
Net income (loss) per share:
Basic	$ (1.28)		$ 0.21	[1]	$ (1.43)		$ 0.20	[1]
Diluted	$ (1.28)	[3],[4]	$ 0.19	[1],[3],[4]	$ (1.43)	[3],[4]	$ 0.20	[1],[3],[4]
Weighted average shares outstanding:
Basic	27,534		26,432		26,985		25,038
Diluted	27,534		31,657	[1]	26,985		25,595

[1] As adjusted to reflect the impact of additional tax-related adjustments to the Company's purchase accounting for Continuous Computing in accordance with ASC 805-10 "Business Combinations." See Note 2 — Acquisitions for additional information

[2] (A)As adjusted to reflect the impact of additional tax-related adjustments to the Company's purchase accounting for Continuous Computing in accordance with ASC 805-10 "Business Combinations." See Note 2 — Acquisitions for additional information.

[3] For the three and nine months ended September 30, 2012, the 0.8 million and 1.1 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

[4] For the three and nine months ended September 30, 2012 and the nine months ended September 30, 2011, 3.8 million and 3.6 million as-if converted shares associated with the Company's 2013 and 2015 convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive