Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 282,518	$ 262,336
Cost of revenues	230,406	214,902
Selling, general and administrative expenses	24,182	21,313
Other operating income, net	(439)	(14)
Operating income	28,369	26,135
Foreign currency exchange gain	(368)	(230)
Interest expense, net	2,520	2,368
Income from operations before income taxes	26,217	23,997
Provision for income taxes	8,842	8,363
Net income	$ 17,375	$ 15,634
Income per common share -basic: (in Dollars per share)	$ 0.21	$ 0.17
Income per common share -diluted: (in Dollars per share)	$ 0.18	$ 0.16