Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue
Services	$ 62,849	$ 62,269
Systems	19,018	22,821
Total revenue	81,867	85,090
Direct costs of revenue
Direct cost of services revenue	34,722	33,415
Direct cost of systems revenue	13,380	16,876
Total direct cost of revenue	48,102	50,291
Services gross profit	28,127	28,854
Systems gross profit	5,638	5,945
Total gross profit	33,765	34,799
Operating expenses
Research and development expense	8,447	10,363
Sales and marketing expense	6,384	6,931
General and administrative expense	12,619	11,647
Depreciation and amortization of property and equipment	3,037	3,403
Amortization of acquired intangible assets	927	949
Total operating expenses	31,414	33,293
Income from operations	2,351	1,506
Interest expense	(1,979)	(2,204)
Amortization of deferred financing fees	(163)	(168)
Other income, net	452	137
Net income (loss) before income taxes	661	(729)
Income tax (provision) benefit	(366)	252
Net income (loss)	$ 295	$ (477)
Net income (loss) per share-basic	$ 0.00	$ (0.01)
Net income (loss) per share-diluted	$ 0.00	$ (0.01)
Weighted average shares outstanding-basic	60,342	59,079
Weighted average shares outstanding-diluted	62,026	59,079