Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 56,918	$ 37,232
OTHER ITEMS OF COMPREHENSIVE EARNINGS:
Change in unrealized gain on investment securities available-for-sale, before income taxes	(66,770)	73,037
Reclassification adjustment for realized gains on investment securities included in net earnings, before income taxes	(808)	(2,062)
Total other items of comprehensive earnings	(67,578)	70,975
Income tax benefit (expense) related to:
Change in unrealized gain on investment securities available-for-sale	14,022	(15,338)
Reclassification adjustment for realized gains on investment securities included in net earnings	170	433
Total income tax benefit (expense)	14,192	(14,905)
COMPREHENSIVE EARNINGS	$ 3,532	$ 93,302

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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