Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income		$ 157,539	$ 173,549
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities	[1],[2]	22,710	(77,831)
Foreign currency translation adjustment	[2]	3,429	10,509
Total other comprehensive income/(loss), net of tax		26,139	(67,322)
Comprehensive income		$ 183,678	$ 106,227

[1] Net of reclassifications to earnings of realized losses of $5.6 million for the three months ended March 31, 2023. There were no reclassifications to earnings for the three months ended March 31, 2022.

[2] Net of tax expense of $8.7 million and tax benefit of $20.8 million for the three months ended March 31, 2023 and 2022, respectively.