Consolidated Statements of Comprehensive Earnings (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 EARNINGS	$ 49,556	$ 59,341	$ 152,997	$ 175,807
OTHER ITEMS OF COMPREHENSIVE EARNINGS (LOSS):
Change in unrealized gain (loss) on investment securities available-for-sale, before income taxes	(190,407)	(293,219)	(133,453)	(924,157)
Reclassification adjustment for realized gains on investment securities included in net earnings, before income taxes	972	(334)	914	(2,013)
Total other items of comprehensive earnings (loss)	(189,435)	(293,553)	(132,539)	(926,170)
Income tax benefit (expense) related to:
Change in unrealized gain (loss) on investment securities available-for-sale	39,985	61,576	28,025	194,073
Reclassification adjustment for realized gains (losses) on investment securities included in net earnings	(204)	70	(192)	423
Total income tax benefit (expense)	39,781	61,646	27,833	194,496
COMPREHENSIVE EARNINGS (LOSS)	$ (100,098)	$ (172,566)	$ 48,291	$ (555,867)