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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 190,308	$ 129,470
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(4,558)	1,685
Unrealized loss on investments:
Unrealized losses during the period, net of income taxes of $1,186 and $160	(3,969)	(543)
Reclassification adjustment for losses realized in net income, net of income taxes of $(57) and $(74)	189	253
Total other comprehensive (loss) income, net of tax	(8,338)	1,395
Comprehensive income	$ 181,970	$ 130,865

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