Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 61,247,000	$ 53,097,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	9,633,000	10,119,000
Change In Unamortized Net Loan Costs And Premiums	(529,000)	(3,666,000)
Accretion of acquired loans	(305,000)	(84,000)
Provision for (release of) credit losses	7,250,000	(2,000,000)
Deferred income tax expense	644,000	643,000
Equity Securities, FV-NI, Gain (Loss)	(368,000)	627,000
Gain (Loss) on Disposition of Property Plant Equipment	79,000	406,000
Sale and Leaseback Transaction, Gain (Loss), Net	145,000	145,000
Stock based compensation	1,672,000	834,000
Increase in cash surrender value of life insurance policies	(1,854,000)	(1,795,000)
Operating Lease, Payments	(3,432,000)	(9,030,000)
Change in Fair Value on Loans Held for Sale	17,000	548,000
Net change in:
Trading assets	(581,000)	(236,000)
Loans held for sale	1,656,000	17,987,000
Other assets	17,326,000	46,805,000
Increase (Decrease) in Other Operating Liabilities	(40,844,000)	(38,582,000)
Total adjustments	(9,781,000)	22,431,000
Net cash provided by operating activities	51,466,000	75,528,000
Cash flows used in investing activities
Payments to Acquire Equity Securities, FV-NI	136,000	184,000
Proceeds from maturities and principal repayments of securities available for sale	15,694,000	34,927,000
Payments to Acquire Debt Securities, Available-for-sale	0	(98,246,000)
Proceeds from maturities and principal repayments of securities held to maturity	27,877,000	51,072,000
Purchases of securities held to maturity	0	(266,972,000)
Net purchase of Federal Home Loan Bank stock	(35,085,000)	0
Investments in low income housing projects	(13,669,000)	(6,405,000)
Purchases of life insurance policies	(91,000)	(93,000)
Net (increase) decrease in loans	(18,981,000)	10,605,000
Purchases of bank premises and equipment	(4,219,000)	(8,335,000)
Proceeds from the sale of bank premises and equipment	52,000	0
Net cash used in investing activities	(28,558,000)	(283,631,000)
Cash flows provided by (used in) financing activities
Net increase (decrease) in time deposits	259,590,000	(131,925,000)
Net decrease in other deposits	(866,445,000)	(21,112,000)
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net	879,000,000	0
Repayments of Debt	0	(14,063,000)
Proceeds from Stock Options Exercised	80,000	0
Restricted stock awards issued, net of awards surrendered	(1,110,000)	(1,063,000)
Proceeds from shares issued under direct stock purchase plan	642,000	571,000
Payments for shares repurchased under share repurchase program	(119,951,000)	(1,902,000)
Common dividends paid	(25,103,000)	(22,728,000)
Net cash provided by (used in) financing activities	126,703,000	(192,222,000)
Net increase (decrease) in cash and cash equivalents	149,611,000	(400,325,000)
Cash and cash equivalents at beginning of year	352,933,000	2,240,684,000
Cash and cash equivalents at end of period	502,544,000	1,840,359,000
Supplemental schedule of noncash investing and financing activities
Net increase (decrease) in capital commitments relating to low income housing project investments	564,000	(718,000)
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2,642,000	$ 1,549,000