Consolidated Statements of Comprehensive Earnings (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 50,873	$ 60,494	$ 103,441	$ 116,466
OTHER ITEMS OF COMPREHENSIVE EARNINGS (LOSS):
Change in unrealized gain (loss) on investment securities available-for-sale, before income taxes	(40,500)	(240,038)	56,954	(630,937)
Reclassification adjustment for realized gains on investment securities included in net earnings, before income taxes	(46)	(1,648)	(58)	(1,679)
Total other items of comprehensive earnings (loss)	40,546	(241,686)	56,896	(632,616)
Income tax benefit (expense) related to:
Change in unrealized gain (loss) on investment securities available-for-sale	(8,506)	50,409	(11,960)	132,497
Reclassification adjustment for realized gains on investment securities included in net earnings	9	346	12	353
Total income tax benefit (expense)	8,515	50,754	(11,948)	132,849
COMPREHENSIVE EARNINGS (LOSS)	$ 18,842	$ (130,438)	$ 148,389	$ (383,301)