Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
REVENUES:
Services	$ 112,715	$ 99,066	$ 225,744	$ 196,897
Products	55,677	51,930	110,647	100,070
Total revenues	168,392	150,996	336,391	296,967
COST OF REVENUES:
Cost of services	91,718	81,448	182,965	161,008
Cost of products	38,966	35,200	77,444	66,319
Total cost of revenues	130,684	116,648	260,409	227,327
Gross profit	37,708	34,348	75,982	69,640
OPERATING EXPENSES:
Administrative	8,622	8,726	16,429	18,856
Salary and payroll taxes	14,377	13,386	28,463	26,563
Total operating expenses	22,999	22,112	44,892	45,419
Income from operations	14,709	12,236	31,090	24,221
OTHER INCOME (EXPENSE), NET:
Interest expense	(249)	(786)	(1,325)	(1,691)
Other income	190	76	217	107
Total other income (expense), net	(59)	(710)	(1,108)	(1,584)
Income before provision for income taxes	14,650	11,526	29,982	22,637
PROVISION FOR INCOME TAXES	1,426	1,566	3,129	3,020
Net income	$ 13,224	$ 9,960	$ 26,853	$ 19,617
Income per share:
Basic (in Dollars per share)	$ 0.88	$ 0.67	$ 1.79	$ 1.32
Diluted (in Dollars per share)	$ 0.87	$ 0.66	$ 1.77	$ 1.30