CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 50,689	$ 70,403
Other comprehensive (loss) income, net of tax
Unrealized gain (loss) on debt securities arising during the period	(7,186)	30,485
Change in retirement obligation	288	115
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(4,091)	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(301)	4
Other comprehensive income (loss)	(11,290)	30,604
Comprehensive income (loss)	$ 39,399	$ 101,007