CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Net income		$ 73,458	$ 70,698
Available-for-sale debt securities:
Net unrealized holding (losses) gains on debt securities	[1]	(15,065)	87,228
Other comprehensive (loss) income for the period, net of tax		(15,065)	87,228
Total comprehensive income		$ 58,393	$ 157,926

[1] Net unrealized holding (losses) gains on available-for-sale   debt securities have no tax effect because securities   are either tax-exempt, held by an International   Banking Entity ("IBE"), or have a full deferred tax asset   valuation allowance.