CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net revenues	$ 189,106	[1]	$ 170,744	[1]
Cost of revenues	111,329		99,292
Gross profit	77,777		71,452
Selling, general and administrative expenses	25,904		26,946
Income from operations	51,873		44,506
Other income, principally interest, net	9,015		8,289
Income before provision for income taxes	60,888		52,795
Income tax expense	14,464		12,050
Net income	46,424		40,745
Other Comprehensive Income (Loss)
Foreign currency translation adjustments	1,865		14,831
Gains (losses) on derivatives:
Gains (losses) arising during period on net investment hedges	90		1,181
Unrealized gains (losses) on securities:
Unrealized holding gains arising during period	211		272
Reclassification adjustment for gains included in net income	(823)		(177)
Unrealized gains on securities, Total	(612)		95
Defined benefit pension plans:
Net Profit / (loss) arising during period	6		(4)
Amortization of prior service cost included in net periodic pension cost	8		9
Defined Benefit Pension plans, Total	14		5
Other comprehensive income (loss), before tax	1,357		16,112
Income tax benefit (expense) related to other comprehensive income (loss)	197		(31)
Other comprehensive income (loss), net of tax	1,554		16,081
Comprehensive Income	$ 47,978		$ 56,826
Dividend per share	$ 0.00		$ 0.06
EARNINGS PER SHARE:
Basic	$ 1.11		$ 0.98
Diluted	$ 1.11		$ 0.98
Weighted average common shares outstanding:
Basic	41,742		41,653
Diluted	41,839		41,765

[1] Net revenues are attributed to regions based upon customer location.