Consolidated Statements of Comprehensive Income (Loss) — Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 86,756	$ 63,912	$ 188,051	$ 199,323
Unrealized gains (losses) on available for sale debt securities:
Unrealized gains (losses) arising during the period	23,666	(46,450)	14,535	(213,532)
Income tax effect	(6,011)	12,077	(3,692)	55,518
Reclassification adjustments for (gains) losses included in net income	(429)	4,227	(429)	9,281
Income tax effect	109	(1,099)	109	(2,413)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity	1,379	0	3,700	0
Income tax effect	(350)	0	(939)	0
Net unrealized gains (losses) on available for sale debt securities	18,364	(31,245)	13,284	(151,146)
Other comprehensive income (loss), net of income tax effect	18,364	(31,245)	13,284	(151,146)
Comprehensive income (loss)	$ 105,120	$ 32,667	$ 201,335	$ 48,177