Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 140,252	$ 156,750
Money market instruments	83,366	32,978
Cash and cash equivalents	223,618	189,728
Marketable Securities [Abstract]
Debt Securities, Available-for-sale, Current	1,609,156	1,733,696
Other Investments and Securities, at Cost	99,671	87,091
Total investment securities	1,708,827	1,820,787
Loan balance	7,349,745	7,141,891
Financing Receivable, Allowance for Credit Loss	(84,602)	(85,379)
Net loans	7,265,143	7,056,512
Bank owned life insurance	225,142	220,072
Prepaid assets	158,124	153,579
Goodwill	159,595	159,595
Other intangible assets	4,986	5,975
Premises and equipment, net	77,331	82,126
Affordable housing tax credit investments	64,676	60,968
Other real estate owned	1,354	1,354
Interest Receivable	39,101	34,704
Operating Lease, Right-of-Use Asset	16,349	17,600
Servicing Asset	14,960	15,792
Other	41,708	36,201
Total assets	10,000,914	9,854,993
Liabilities and Shareholders' Equity:
Noninterest bearing	2,732,504	3,074,276
Interest bearing	5,512,220	5,160,439
Total deposits	8,244,724	8,234,715
Short-term borrowings	352,786	227,342
Subordinated debentures and notes	189,025	188,667
Unfunded commitments in affordable housing tax credit investments	31,553	28,132
Operating Lease, Liability	17,426	19,291
Off-Balance Sheet, Credit Loss, Liability	5,201	5,214
Accrued interest payable	3,277	3,486
Other	71,358	78,920
Total liabilities	8,915,350	8,785,767
Shareholders' equity:
Preferred shares (No par value; 200,000 shares authorized; No shares issued)	0	0
Common shares (No par value; 20,000,000 shares authorized; 17,623,104 common shares issued at September 30, 2023 and at December 31, 2022)	461,849	462,404
Retained earnings	896,627	847,235
Treasury shares (1,519,679 common shares at September 30, 2023 and 1,359,521 common shares at December 31, 2022)	(157,022)	(138,019)
Accumulated other comprehensive loss, net of taxes	(115,890)	(102,394)
Total shareholders' equity	1,085,564	1,069,226
Total liabilities and shareholders' equity	$ 10,000,914	$ 9,854,993