Condensed Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,877	$ 28,765
Foreign currency translation adjustment, net of tax expense of zero and $201 for three months of 2015 and 2014, respectively	(15,237)	837
Unrealized gain (loss) on available-for-sale investments, net of tax expense (benefit) of $177 and ($1,529) for the three months of 2015 and 2014, respectively	380	(2,640)
Other Comprehensive Income (Loss), Net of Tax	(14,857)	(1,803)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 7,020	$ 26,962