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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 11,052	$ 6,779	$ 16,935	$ 5,201
Other comprehensive income, net of tax
Foreign currency translation adjustment	1,652	1,014	20	1,286
Net change in unrealized gain on investments, net of tax	0	727	63	672
Total other comprehensive income	1,652	1,741	83	1,958
Total comprehensive income	$ 12,704	$ 8,520	$ 17,018	$ 7,159

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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