Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
REVENUES:
Services	$ 154,441	$ 146,415	$ 306,246	$ 301,709
Products	62,920	62,848	127,219	124,290
Total revenues	217,361	209,263	433,465	425,999
COST OF REVENUES:
Cost of services	128,984	122,837	255,313	252,094
Cost of products	42,227	41,722	83,872	84,290
Total cost of revenues	171,211	164,559	339,185	336,384
Gross profit	46,150	44,704	94,280	89,615
OPERATING EXPENSES:
Administrative	15,494	14,466	33,488	29,378
Salary and payroll taxes	19,764	19,905	39,710	40,343
Total operating expenses	35,258	34,371	73,198	69,721
Income from operations	10,892	10,333	21,082	19,894
OTHER INCOME (EXPENSE), NET:
Interest expense	(833)	(697)	(1,604)	(1,453)
Other income	217	326	495	469
Total other income (expense), net	(616)	(371)	(1,109)	(984)
Income before provision for income taxes	10,276	9,962	19,973	18,910
PROVISION FOR INCOME TAXES	1,324	1,679	2,909	3,266
Net income	$ 8,952	$ 8,283	$ 17,064	$ 15,644
INCOME PER SHARE:
Basic (in dollars per share)	$ 0.70	$ 0.57	$ 1.32	$ 1.07
Diluted (in dollars per share)	$ 0.69	$ 0.57	$ 1.31	$ 1.07