Consolidated Statements of Comprehensive Earnings (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 59,341	$ 58,928	$ 175,807	$ 172,225
OTHER ITEMS OF COMPREHENSIVE EARNINGS (LOSS):
Change in unrealized gain (loss) on investment securities available-for-sale, before income taxes	(293,219)	(34,224)	(924,157)	(76,335)
Reclassification adjustment for realized gains (loss) on investment securities included in net earnings, before income taxes	(334)	(1)	(2,013)	(814)
Total other items of comprehensive earnings (loss)	(293,553)	(34,225)	(926,170)	(77,149)
Income tax benefit (expense) related to:
Change in unrealized gain on investment securities available-for-sale	61,576	7,186	194,073	16,029
Reclassification adjustment for realized gains (loss) on investment securities included in net earnings	70	0	423	172
Total income tax benefit (expense)	61,646	7,186	194,496	16,201
COMPREHENSIVE EARNINGS (LOSS)	$ (172,566)	$ 31,889	$ (555,867)	$ 111,277