Condensed Consolidated Statements of Operations (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	$ 272,466	$ 259,376	$ 515,290	$ 527,299
Cost of revenues	214,711	214,710	411,271	435,445
Selling, general and administrative expenses	27,981	23,248	53,504	45,699
Other operating income, net	(2,042)	(178)	(2,058)	(302)
Operating income	31,816	21,596	52,573	46,457
Foreign currency exchange (gain) loss	(1,805)	475	(1,751)	107
Interest expense, net	2,830	2,802	5,750	5,322
Income from continuing operations before income taxes	30,791	18,319	48,574	41,028
Provision for income taxes	10,462	6,460	16,503	14,302
Income from continuing operations	20,329	11,859	32,071	26,726
Income from discontinued operations, net of tax		3,805	1,152	6,313
Gain from disposal of discontinued operations, net of tax			22,117
Net income	$ 20,329	$ 15,664	$ 55,340	$ 33,039
Income per common share -basic:
Income from continuing operations (in Dollars per share)	$ 0.24	$ 0.14	$ 0.38	$ 0.32
Income from discontinued operations (in Dollars per share)		$ 0.05	$ 0.28	$ 0.07
Net income (in Dollars per share)	$ 0.24	$ 0.19	$ 0.66	$ 0.39
Income per common share -diluted:
Income from continuing operations (in Dollars per share)	$ 0.21	$ 0.13	$ 0.34	$ 0.29
Income from discontinued operations (in Dollars per share)		$ 0.04	$ 0.23	$ 0.06
Net income (in Dollars per share)	$ 0.21	$ 0.17	$ 0.57	$ 0.35