Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 234,475	$ 227,562	$ 202,034
OTHER ITEMS OF COMPREHENSIVE EARNINGS (LOSS):
Change in unrealized gain (loss) on investment securities available-for sale, before income taxes	(800,997)	(89,238)	133,872
Reclassification adjustment for realized gains (loss) on investment securities included in net earnings, before income taxes	(2,144)	(815)	(3,633)
Total other items of comprehensive earnings (losses)	(803,141)	(90,053)	130,239
Income tax benefit (expense) related to:
Change in unrealized gain (loss) on investment securities available-for-sale	168,210	18,740	(28,113)
Reclassification adjustment for realized gains (loss) on investment securities included in net earnings	450	171	763
Other Comprehensive Income (Loss), Tax, Total	168,660	18,911	(27,350)
COMPREHENSIVE EARNINGS	$ (400,006)	$ 118,598	$ 304,923