Comprehensive Income

6 Months Ended

Jun. 30, 2011

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income

Comprehensive Income

The following table presents the calculation of comprehensive income and its components (in thousands):

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2011			2010			2011			2010
Net income	$	47,921		$	38,123		$	98,538		$	79,001
Other comprehensive income (loss):
Foreign currency translation adjustments	1,782			(3,094		)	4,388			(4,880		)
Change in unrealized gain (loss) on investments, net	1,580			3,980			2,677			3,989
Income tax expense related to unrealized gain (loss) on investments, net	(605		)	(1,542		)	(1,025		)	(1,545		)
Other comprehensive income (loss)	2,757			(656		)	6,040			(2,436		)
Comprehensive income	$	50,678		$	37,467		$	104,578		$	76,565

Accumulated other comprehensive income (loss) consisted of (in thousands):

	June 30, 2011			December 31, 2010
Foreign currency translation adjustment	$	6,491		$	2,103
Net unrealized gain (loss) on investments, net of tax of $3,979 at June 30, 2011 and $5,005 at December 31, 2010	(6,193		)	(7,844		)
Total accumulated other comprehensive income (loss)	$	298		$	(5,741	)