Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 121,956	$ 196,674
INVESTING ACTIVITIES
Net increase in loans held for investment	(612,293)	(533,917)
Available-for-sale debt securities:
Proceeds from sales	30,987	0
Proceeds from maturities, prepayments and calls	254,684	484,434
Purchases of securities	(4,500)	(468,399)
Held-to-maturity debt securities:
Proceeds from maturities, prepayments and calls	35,823	75,247
Purchases of securities		(335,042)
Proceeds from bank owned life insurance	2,946	7,816
Purchases of premises and equipment – net	(19,581)	(5,281)
Net cash used in investing activities	(311,934)	(775,142)
FINANCING ACTIVITIES
Decrease in deposits	(40,022)	(119,900)
Proceeds from Federal Home Loan Bank borrowings	1,380,000
Repayment of Federal Home Loan Bank borrowings	(960,000)	(126,980)
Decrease in other short-term borrowings	(28,376)	(13,910)
Principal repayments of finance lease obligations	(2,057)	(389)
Issuance of subordinated debt, net of issuance costs		147,702
Dividends paid to common shareholders	(61,703)	(61,292)
Dividends paid to preferred shareholders	(7,594)	(7,594)
Treasury shares purchased - net	(3,599)	(111,971)
Net cash provided by (used in) financing activities	276,649	(294,334)
Net increase (decrease) in cash, cash equivalents and restricted cash	86,671	(872,802)
Cash, cash equivalents and restricted cash at beginning of the period	408,411	1,251,358
Cash, cash equivalents and restricted cash at end of the period	495,082	378,556
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	149,960	18,763
Income taxes paid	33,785	21,820
Transfers of loans to other real estate owned	$ 168	$ 1,554