UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Income Statement [Abstract]
Product revenue	$ 406,954	$ 404,167	$ 1,200,004	$ 1,096,593
Service revenue	47,067	36,986	134,717	91,658
Revenue	454,021	441,153	1,334,721	1,188,251
Cost of product revenue	353,958	344,405	1,034,752	947,624
Cost of service revenue	22,999	21,364	69,423	52,802
Cost of revenue	376,957	365,769	1,104,175	1,000,426
Gross profit	77,064	75,384	230,546	187,825
Selling, general and administrative expenses	60,721	55,950	176,842	146,978
Bad debt expense	3,718	5,309	13,379	12,536
Acquisition and integration expenses	0	595	0	6,694
Restructuring expense	3,454	0	8,644	0
Amortization of intangibles	1,244	1,326	4,004	2,196
Legal settlement	0	0	4,800	0
Income from operations	7,927	12,204	22,877	19,421
Interest expense, net	7,063	8,122	21,503	19,515
Income (loss) before income taxes	864	4,082	1,374	(94)
Income tax expense	316	2,117	211	1,981
Net income (loss)	$ 548	$ 1,965	$ 1,163	$ (2,075)
Income (loss) per common share
Basic	$ 0.01	$ 0.04	$ 0.02	$ (0.04)
Diluted	$ 0.01	$ 0.04	$ 0.02	$ (0.04)
Weighted average common shares outstanding
Basic	54,607,000	53,425,000	54,348,000	49,232,000
Diluted	55,338,000	54,210,000	55,054,000	49,232,000