Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 138,431	$ 201,029
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(2,739)	235
Net change in unrealized gains (losses) on available-for-sale securities	3,424	3,179
Other comprehensive income (loss)	685	3,414
Comprehensive income	$ 139,116	$ 204,443

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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