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
Revenue
Services	$ 72,034	$ 79,096	$ 217,143	$ 221,983
Systems	23,999	60,960	66,526	132,730
Total revenue	96,033	140,056	283,669	354,713
Direct costs of revenue
Direct cost of services revenue	39,573	45,545	121,096	130,427
Direct cost of systems revenue	20,677	50,385	55,402	111,244
Total direct cost of revenue	60,250	95,930	176,498	241,671
Services gross profit	32,461	33,551	96,047	91,556
Systems gross profit	3,322	10,575	11,124	21,486
Total gross profit	35,783	44,126	107,171	113,042
Operating expenses
Research and development expense	7,898	9,799	25,745	27,392
Sales and marketing expense	6,684	8,041	22,445	23,144
General and administrative expense	13,824	14,931	42,552	40,276
Depreciation and amortization of property and equipment	3,768	3,689	10,885	10,499
Amortization of acquired intangible assets	1,142	1,431	3,427	3,520
Impairment of goodwill and long-lived assets				125,703
Total operating expenses	33,316	37,891	105,054	230,534
Income (loss) from operations	2,467	6,235	2,117	(117,492)
Interest expense	(2,173)	(2,088)	(6,126)	(5,367)
Amortization of deferred financing fees	(1,538)	(190)	(3,275)	(568)
Loss on early retirement of debt	(151)		(151)
Other income (expense), net	46	(115)	(62)	(83)
Net income (loss) before income taxes	(1,349)	3,842	(7,497)	(123,510)
Income tax benefit	1,194	337	4,642	16,203
Net income (loss)	$ (155)	$ 4,179	$ (2,855)	$ (107,307)
Net income (loss) per share-basic	$ 0.00	$ 0.07	$ (0.05)	$ (1.86)
Net income (loss) per share-diluted	$ 0.00	$ 0.07	$ (0.05)	$ (1.86)
Weighted average shares outstanding-basic	58,687	58,019	58,574	57,806
Weighted average shares outstanding-diluted	58,687	68,505	58,574	57,806