Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 46,842	$ 54,834
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	2,000	(5,500)
Depreciation and Amortization	5,885	5,308
Amortization of Deferred Loan and Lease (Fees) Costs, Net	323	(856)
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	3,390	7,031
Amortization of Operating Lease Right-of-Use Assets	2,908	2,903
Share-Based Compensation	3,371	4,010
Benefit Plan Contributions	(419)	(417)
Deferred Income Taxes	5,708	3,332
Net Gains on Sales of Loans and Leases	(676)	(1,724)
Net Losses on Sales of Investment Securities	1,792	1,545
Proceeds from Sales of Loans Held for Sale	7,299	77,591
Originations of Loans Held for Sale	(8,384)	(55,110)
Net Tax Benefits (Deficiency) from Share-Based Compensation	(418)	214
Net Change in Other Assets and Other Liabilities	(100,580)	(51,366)
Net Cash Provided by (Used in) Operating Activities	(30,959)	41,795
Investment Securities Available-for-Sale:
Proceeds from Prepayments and Maturities	59,837	249,585
Purchases		(481,723)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	105,876	216,409
Purchases		(15,240)
Net Change in Loans and Leases	(180,606)	(284,797)
Purchases of Premises and Equipment	(2,240)	(5,658)
Net Cash Used in Investing Activities	(17,133)	(321,424)
Financing Activities
Net Change in Deposits	(124,396)	356,179
Net Change in Short-Term Borrowings	325,000
Proceeds from Long-Term Debt	100,000
Repayments of Long-Term Debt	(25)	(24)
Proceeds from Issuance of Common Stock	1,437	2,288
Repurchase of Common Stock	(13,793)	(13,960)
Cash Dividends Paid on Common Stock	(27,944)	(28,265)
Cash Dividends Paid on Preferred Stock	(1,969)	(1,969)
Net Cash Provided by Financing Activities	258,310	314,249
Net Change in Cash and Cash Equivalents	210,218	34,620
Cash and Cash Equivalents at Beginning of Period	401,767	560,434
Cash and Cash Equivalents at End of Period	611,985	595,054
Supplemental Information
Cash Paid for Interest	49,014	5,264
Cash Paid for Income Taxes	$ 92	3,069
Non-Cash Investing and Financing Activities:
Transfer from Loans to Loans Held for Sale		$ 380