Income Taxes (Tables)

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Summary of Provision for Income Taxes and U.S. Federal Tax Rate

The provision for income taxes differs from amounts computed by applying the U.S. federal tax rate of 35% to income before income taxes for the three months ended September 30, 2014 and 2013 due to the following (in thousands):

	2014					2013
Computed “expected” tax expense	$	47,794		35.0	%	$	37,679		35.0	%
Changes resulting from:
Foreign income tax differential		(6,073	)	(4.5	)		(3,874	)	(3.6	)
State taxes net of federal benefits		1,597		1.2			1,084		1.0
Foreign-sourced nontaxable income		(4,218	)	(3.1	)		(3,360	)	(3.1	)
Other		1,945		1.5			1,228		1.2
Effect of statutory rate change		—		—			(3,722	)	(3.5	)
Provision for income taxes	$	41,045		30.1	%	$	29,035		27.0	%