Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 150,380	$ 172,349	$ 314,404	$ 359,381
Other comprehensive income (loss), net of tax:
Net changes in unrealized gains (losses) on available-for-sale investment securities	29,027	(8,841)	51,038	(27,653)
Foreign currency translation adjustments	(6,016)	(6,822)	(2,836)	(24)
Other comprehensive income (loss)	23,011	(15,663)	48,202	(27,677)
COMPREHENSIVE INCOME	$ 173,391	$ 156,686	$ 362,606	$ 331,704

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

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