Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues	$ 455,470	$ 451,178	$ 1,336,945	$ 1,331,054
Operating expenses
Direct cost of revenues	301,609	293,244	872,108	863,068
Selling, general and administrative expenses	105,058	102,461	316,317	317,880
Special charges	0	5,347	0	14,711
Acquisition-related contingent consideration	159	257	(1,145)	(1,591)
Amortization of other intangible assets	2,900	3,398	8,919	11,466
Costs and Expenses, Total	409,726	404,707	1,196,199	1,205,534
Operating income	45,744	46,471	140,746	125,520
Other income (expense)
Interest income and other	2,027	1,014	2,840	3,465
Interest expense	(11,696)	(12,634)	(36,537)	(38,197)
Loss on early extinguishment of debt	(19,589)		(19,589)
Other (expense) income	(29,258)	(11,620)	(53,286)	(34,732)
Income before income tax provision	16,486	34,851	87,460	90,788
Income tax provision	6,177	12,329	31,756	32,902
Net income	$ 10,309	$ 22,522	$ 55,704	$ 57,886
Earnings per common share-basic	$ 0.25	$ 0.57	$ 1.37	$ 1.46
Earnings per common share-diluted	$ 0.25	$ 0.55	$ 1.34	$ 1.43
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net of tax expense of $0	$ (17,229)	$ (22,542)	$ (24,412)	$ (10,120)
Total other comprehensive loss, net of tax	(17,229)	(22,542)	(24,412)	(10,120)
Comprehensive (loss) income	$ (6,920)	$ (20)	$ 31,292	$ 47,766