Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 196,674	$ 276,138
INVESTING ACTIVITIES
Net (increase) decrease in loans held for investment	(533,917)	919,999
Available-for-sale debt securities:
Proceeds from maturities, prepayments and calls	484,434	636,120
Purchases of securities	(468,399)	(1,691,731)
Held-to-maturity debt securities:
Proceeds from maturities, prepayments and calls	75,247	77,806
Purchases of securities	(335,042)	(302,710)
Purchases of bank owned life insurance		(40,000)
Proceeds from bank owned life insurance	7,816	2,375
Purchases of premises and equipment – net	(5,281)	(5,856)
Net cash used in investing activities	(775,142)	(403,997)
FINANCING ACTIVITIES
(Decrease) increase in deposits	(119,900)	997,027
Repayment of Federal Home Loan Bank borrowings	(126,980)	(340,153)
Decrease in other short-term borrowings	(13,910)	(89,404)
Principal repayments of finance lease obligations	(389)	(331)
Issuance of subordinated debt, net of issuance costs	147,702
Repayment of subordinated and junior subordinated debt		(25,000)
Dividends paid to common shareholders	(61,292)	(65,311)
Dividends paid to preferred shareholders	(7,594)	(7,594)
Treasury shares purchased - net	(111,971)	(125,706)
Net cash (used in) provided by financing activities	(294,334)	343,528
Net (decrease) increase in cash, cash equivalents and restricted cash	(872,802)	215,669
Cash, cash equivalents and restricted cash at beginning of the period	1,251,358	905,447
Cash, cash equivalents and restricted cash at end of the period	378,556	1,121,116
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	18,763	26,547
Income taxes paid	21,820	34,595
Transfers of loans to other real estate owned	$ 1,554	$ 526