Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Net income	$ 122,300	$ 82,690
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,760	13,736
Provision (Reversal of Provision) for Credit Losses	(1,150)	0
Net amortization of deferred loan fees	(424)	(1,445)
Stock option compensation expense	1,017	1,017
Life insurance gains	(278)	(923)
Securities losses	125	0
Net changes in:
Interest income receivable	(2,039)	(13,985)
Other assets	(336)	(5,317)
Income taxes payable	43,323	3,055
Net deferred tax asset	1,107	510
Interest expense payable	53	21
Other liabilities	(6,269)	(7,476)
Net Cash Provided by Operating Activities	166,189	71,883
Investing Activities:
Net repayments of loans	71,672	88,242
Purchases of debt securities available for sale	0	(619,601)
Proceeds from sale/maturity/calls of debt securities available for sale	376,842	391,548
Purchases of debt securities held to maturity	0	(718,940)
Proceeds from maturity/calls of debt securities held to maturity	31,530	89,246
Purchases of Federal Reserve Bank stock	(2,326)	0
Purchases of premises and equipment	(897)	(812)
Net Cash Provided by (Used in) Investing Activities	476,821	(770,317)
Financing Activities:
Net change in deposits	(526,277)	81,300
Net change in short-term borrowings	57,549	(69,360)
Exercise of stock options	0	2,171
Retirement of common stock	(13,747)	(218)
Common stock dividends paid	(34,221)	(33,879)
Net Cash Used in Financing Activities	(516,696)	(19,986)
Net Change In Cash and Due from Banks	126,314	(718,420)
Cash and Due from Banks at Beginning of Period	294,236	1,132,085
Cash and Due from Banks at End of Period	420,550	413,665
Supplemental disclosure of non cash activities:
Right-of-use assets acquired in exchange for operating lease liabilities	7,160	2,925
Supplemental disclosure of cash flow activities:
Cash paid for amounts included in operating lease liabilities	4,604	4,553
Interest paid for the period	2,158	1,429
Income tax payments for the period	$ 0	$ 25,240