Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 124,080	$ (14,038)
Available for sale securities:
Unrealized (losses) gains arising during the period	(122,662)	145,438
Income tax benefit (expense) related to unrealized (losses) gains	31,893	(37,827)
Reclassification adjustment for net realized gains in earnings	(12)	0
Income tax expense related to realized gains	3	0
Net change in unrealized (losses) gains for available for sale securities	(90,778)	107,611
Junior subordinated debentures, at fair value:
Unrealized gains arising during the period	6,453	25,812
Income tax expense related to unrealized gains	(1,678)	(6,711)
Net change in unrealized gains for junior subordinated debentures, at fair value	4,775	19,101
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent [Abstract]
Amortization of unrecognized net actuarial loss included in net periodic pension cost	19	24
Income tax expense related to unrecognized actuarial loss	(5)	(6)
Net change in pension plan liability adjustment	14	18
Other comprehensive (loss) income, net of tax	(85,989)	126,730
Comprehensive income	$ 38,091	$ 112,692