Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 159,552	$ 156,750
Money market instruments	70,845	32,978
Cash and cash equivalents	230,397	189,728
Marketable Securities [Abstract]
Debt Securities, Available-for-sale, Current	1,668,864	1,733,696
Other Investments and Securities, at Cost	88,089	87,091
Total investment securities	1,756,953	1,820,787
Loan balance	7,208,109	7,141,891
Financing Receivable, Allowance for Credit Loss	(87,206)	(85,379)
Net loans	7,120,903	7,056,512
Bank owned life insurance	224,248	220,072
Prepaid assets	158,482	153,579
Goodwill	159,595	159,595
Other intangible assets	5,320	5,975
Premises and equipment, net	78,933	82,126
Affordable housing tax credit investments	56,774	60,968
Other real estate owned	2,267	1,354
Interest Receivable	36,416	34,704
Operating Lease, Right-of-Use Asset	16,609	17,600
Servicing Asset	15,237	15,792
Other	37,417	36,201
Total assets	9,899,551	9,854,993
Liabilities and Shareholders' Equity:
Noninterest bearing	2,796,009	3,074,276
Interest bearing	5,562,967	5,160,439
Total deposits	8,358,976	8,234,715
Short-term borrowings	143,914	227,342
Subordinated debentures and notes	188,904	188,667
Unfunded commitments in affordable housing tax credit investments	22,556	28,132
Operating Lease, Liability	17,917	19,291
Off-Balance Sheet, Credit Loss, Liability	5,452	5,214
Accrued interest payable	4,048	3,486
Other	69,027	78,920
Total liabilities	8,810,794	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 June 30, 2023 and at December 31, 2022)	460,578	462,404
Retained earnings	876,830	847,235
Treasury shares (1,469,679 common shares at June 30, 2023 and 1,359,521 common shares at December 31, 2022)	(151,865)	(138,019)
Accumulated other comprehensive loss, net of taxes	(96,786)	(102,394)
Total shareholders' equity	1,088,757	1,069,226
Total liabilities and shareholders' equity	$ 9,899,551	$ 9,854,993