UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Product revenue	$ 106,803	$ 89,782
Service revenue	48,830	41,055
Revenue	155,633	130,837
Cost of product revenue	72,326	57,609
Cost of service revenue	29,785	21,876
Cost of revenue	102,111	79,485
Gross profit	53,522	51,352
Selling, general and administrative expenses	44,662	41,399
Bad debt expense	3,465	2,655
Acquisition and integration expenses	172	0
Restructuring expense	300	1,299
Amortization of intangibles	879	819
Income from operations	4,044	5,180
Interest expense, net	6,569	6,612
Income (loss) before income taxes	(2,525)	(1,432)
Income tax expense	(502)	(417)
Loss from continuing operations, net of income taxes	(2,023)	(1,015)
(Loss) income from discontinued operations, net of income taxes	(680)	3,956
Net income (loss)	$ (2,703)	$ 2,941
Income (loss) per common share
Basic loss from continuing operations	$ (0.04)	$ (0.02)
Basic (loss) income from discontinued operations	$ (0.01)	$ 0.07
Basic	$ (0.05)	$ 0.05
Diluted loss from continuing operations	$ (0.04)	$ (0.02)
Diluted (loss) income from discontinued operations	$ (0.01)	$ 0.07
Diluted	$ (0.05)	$ 0.05
Weighted average common shares outstanding
Basic	55,307	54,133
Diluted	55,307	54,133