Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUES:
Services	$ 146,415	$ 145,000	$ 301,709	$ 296,312
Products	62,848	62,653	124,290	123,355
Total revenues	209,263	207,653	425,999	419,667
COST OF REVENUES:
Cost of services	122,837	120,093	252,094	241,207
Cost of products	41,722	42,007	84,290	82,684
Total cost of revenues	164,559	162,100	336,384	323,891
Gross profit	44,704	45,553	89,615	95,776
OPERATING EXPENSES:
Administrative	14,466	12,329	29,378	27,141
Salary and payroll taxes	19,905	18,285	40,343	37,922
Total operating expenses	34,371	30,614	69,721	65,063
Income from operations	10,333	14,939	19,894	30,713
OTHER INCOME (EXPENSE), NET:
Interest expense	(697)	(1,137)	(1,453)	(2,556)
Other income	326	159	469	303
Total other income (expense), net	(371)	(978)	(984)	(2,253)
Income before provision for income taxes	9,962	13,961	18,910	28,460
PROVISION FOR INCOME TAXES	1,679	1,669	3,266	3,428
Net income	$ 8,283	$ 12,292	$ 15,644	$ 25,032
INCOME PER SHARE:
Basic (in Dollars per share)	$ 0.57	$ 0.84	$ 1.07	$ 1.71
Diluted (in Dollars per share)	$ 0.57	$ 0.83	$ 1.07	$ 1.69