Consolidated Condensed Statements Of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities:
Net Income (Loss) Attributable to Parent	$ 65,317,000	$ 73,199,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (recovery of) credit losses	2,675,000	(1,614,000)
Amortization of Deferred Loan Origination Fees, Net	(4,400,000)	(7,132,000)
Depreciation	7,122,000	6,943,000
Amortization of investment securities, net	1,722,000	1,704,000
Depreciation, Amortization and Accretion, Net	263,000	(241,000)
Loss (gain) on equity securities, net	380,000	(3,062,000)
Loan originations to be sold in secondary market	(32,720,000)	(128,306,000)
Proceeds from sale of loans in secondary market	32,008,000	135,241,000
Share-based compensation expense	4,085,000	3,355,000
Gains (Losses) on Sales of Other Real Estate	(3,000)	(4,000)
Real Estate Owned, Valuation Allowance, Valuation Increase	(15,000)	(30,000)
Bank owned life insurance income	(2,517,000)	(3,549,000)
Investment in qualified affordable housing tax credits amortization	4,194,000	3,960,000
Changes in assets and liabilities:
Increase in other assets	(7,312,000)	(2,178,000)
Decrease in other liabilities	(12,261,000)	(13,802,000)
Net cash provided by operating activities	57,669,000	56,462,000
Investing activities:
Payments for (Proceeds from) Federal Home Loan Bank Stock	3,605,000	0
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Available-for-sale securities	71,116,000	102,660,000
Payments to Acquire Investments [Abstract]
Payments to Acquire Debt Securities, Available-for-sale	(908,000)	(316,878,000)
Equity securities	(2,195,000)	(2,630,000)
Payments to Acquire Federal Home Loan Bank Stock	(1,407,000)	0
Net loan originations, portfolio loans	(62,384,000)	(90,952,000)
Payments for Affordable Housing Programs	(5,576,000)	(7,252,000)
Proceeds from the sale of OREO	57,000	67,000
Bank owned life insurance death benefits	1,104,000	7,525,000
Payment to Acquire Life Insurance Policy, Investing Activities	(2,500,000)	(7,500,000)
Purchases of premises and equipment	(4,047,000)	(3,740,000)
Net cash used in investing activities	(2,021,000)	(318,361,000)
Financing activities:
Net (decrease) increase in deposits	(70,909,000)	219,870,000
Increase (Decrease) in Other Deposits	195,170,000	173,261,000
Net decrease in short-term borrowings	(83,428,000)	(66,987,000)
Payment, Tax Withholding, Share-based Payment Arrangement	(2,844,000)	(2,451,000)
Payments for Repurchase of Common Stock	(17,860,000)	0
Cash dividends paid	(35,108,000)	(34,533,000)
Net cash (used in) provided by financing activities	(14,979,000)	289,160,000
Increase in cash and cash equivalents	40,669,000	27,261,000
Cash and cash equivalents at beginning of year	189,728,000	219,180,000
Cash and cash equivalents at end of period	230,397,000	246,441,000
Supplemental disclosures of cash flow information:
Cash paid for interest	41,243,000	7,904,000
Non cash activities:
Real Estate Owned, Transfer to Real Estate Owned	1,051,000	1,409,000
Income Taxes Paid	7,350,000	10,500,000
Transfer of Portfolio Loans and Leases to Held-for-sale	0	6,321,000
Equity
Non cash activities:
Transfer to Investments	2,495,000	15,000,000
Other Investments
Payments to Acquire Investments [Abstract]
Payments to Acquire Other Investments	(1,114,000)	(339,000)
Consumer Portfolio Segment [Member]
Changes in assets and liabilities:
Increase in prepaid dealer premiums	(244,000)	(4,795,000)
Mortgage Loans on Real Estate [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of loans in secondary market	$ (625,000)	$ (3,227,000)