Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES:
Services	$ 141,442	$ 113,029
Products	57,091	54,970
Total revenues	198,533	167,999
COST OF REVENUES:
Cost of services	112,278	91,247
Cost of products	40,613	38,478
Total cost of revenues	152,891	129,725
Gross profit	45,642	38,274
OPERATING EXPENSES:
Administrative	10,779	7,807
Salary and payroll taxes	17,135	14,086
Total operating expenses	27,914	21,893
Income from operations	17,728	16,381
OTHER INCOME (EXPENSE), NET:
Interest expense	(1,587)	(1,076)
Other income	246	27
Total other income (expense), net	(1,341)	(1,049)
Income before provision for income taxes	16,387	15,332
PROVISION FOR INCOME TAXES	1,817	1,703
Net income	$ 14,570	$ 13,629
Income per share:
Basic (in Dollars per share)	$ 0.96	$ 0.91
Diluted (in Dollars per share)	$ 0.95	$ 0.90