Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
REVENUES:
Services	$ 151,805	$ 155,294
Products	64,299	61,442
Total revenues	216,104	216,736
COST OF REVENUES:
Cost of services	126,329	129,257
Cost of products	41,645	42,568
Total cost of revenues	167,974	171,825
Gross profit	48,130	44,911
OPERATING EXPENSES:
Administrative	17,994	14,912
Salary and payroll taxes	19,946	20,438
Total operating expenses	37,940	35,350
Income from operations	10,190	9,561
OTHER INCOME (EXPENSE), NET:
Interest expense	(771)	(756)
Other income	278	143
Total other income (expense), net	(493)	(613)
Income before provision for income taxes	9,697	8,948
PROVISION FOR INCOME TAXES	1,585	1,587
Net income	$ 8,112	$ 7,361
INCOME PER SHARE:
Basic (in dollars per share)	$ 0.62	$ 0.50
Diluted (in dollars per share)	$ 0.62	$ 0.50