Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Estimated Fair Value	$ 1,358,219	$ 1,505,520
Marketable equity securities	29,022	23,807
Net loans	3,984,354	3,629,150
Accrued interest receivable	19,223	18,287
Derivative assets	2,573
Liabilities:
Deposits	4,945,134	4,869,866
Carrying Amount
Assets:
Cash and cash equivalents	110,716	200,000
Estimated Fair Value	1,358,219	1,505,520
Marketable equity securities	7,638	7,569
Net loans	3,984,354	3,629,150
Accrued interest receivable	19,223	18,287
Derivative assets	89,503	81,838
Liabilities:
Deposits	4,945,134	4,869,866
Customer repurchase agreements	278,671	290,964
Long-Term Debt, Fair Value	100,000
Accrued interest payable	3,581	953
Derivative liabilities	71,678	65,057
Fair Value
Assets:
Cash and cash equivalents	110,716	200,000
Estimated Fair Value	1,358,219	1,505,520
Marketable equity securities	7,638	7,569
Net loans	3,805,058	3,491,318
Accrued interest receivable	19,223	18,287
Derivative assets	89,503	81,838
Liabilities:
Deposits	4,597,310	4,867,883
Customer repurchase agreements	278,671	290,964
Long-Term Debt, Fair Value	96,888
Accrued interest payable	3,581	953
Derivative liabilities	71,678	65,057
Level 1
Assets:
Cash and cash equivalents	110,716	200,000
Estimated Fair Value	0	0
Marketable equity securities	3,554	3,851
Net loans	0	0
Accrued interest receivable	19,223	18,287
Derivative assets	0	0
Liabilities:
Deposits	3,611,660	3,981,766
Customer repurchase agreements	0	0
Long-Term Debt, Fair Value	0
Accrued interest payable	3,581	953
Derivative liabilities	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	1,356,341	1,503,061
Marketable equity securities	4,084	3,718
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	89,503	81,838
Liabilities:
Deposits	985,650	886,117
Customer repurchase agreements	278,671	290,964
Long-Term Debt, Fair Value	96,888
Accrued interest payable	0	0
Derivative liabilities	71,678	65,057
Level 3
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	1,878	2,459
Marketable equity securities	0	0
Net loans	3,805,058	3,491,318
Accrued interest receivable	0	0
Derivative assets	0	0
Liabilities:
Deposits	0	0
Customer repurchase agreements	0	0
Long-Term Debt, Fair Value	0
Accrued interest payable	0	0
Derivative liabilities	$ 0	$ 0