CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 24,057	$ 10,151
Other comprehensive income:
Change in unrealized gain on available-for-sale investments, net of tax of $68	158
Comprehensive income	$ 24,215	$ 10,151

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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