Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 4,417	$ 1,646
Amortization of investment securities, net	(3,263)	(3,055)
Depreciation	4,430	4,294
Depreciation of premises and equipment	(870)	0
Amortization of investment securities, net	770	656
Realized net investment securities losses	607	2,271
Gain on equity securities, net	1,974	4,544
Loan originations to be sold in secondary market	(112,038)	(96,290)
Proceeds from sale of loans in secondary market	108,708	94,550
Share-based compensation expense	2,520	2,017
OREO valuation adjustments	82	321
Loss (gain) on sale of OREO, net	171	(4,174)
Bank owned life insurance income	(2,292)	(2,040)
Investment in qualified affordable housing tax credits amortization	3,625	3,702
Changes in assets and liabilities:
Decrease in other assets	2,412	3,154
(Decrease) increase in other liabilities	(4,046)	1,731
Net cash provided by operating activities	46,196	60,258
Investing activities:
Payments for (Proceeds from) Federal Home Loan Bank Stock	9,456	0
Proceeds from sales of investment securities	56,448	244,398
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Available-for-sale securities	94,601	97,008
Held-to-maturity securities	225	9,885
Payments to Acquire Investments [Abstract]
Payments to Acquire Debt Securities, Available-for-sale	0	373,372
Payments to Acquire Held-to-maturity Securities	0	(4,946)
Equity securities	0	(2,590)
Payments to Acquire Federal Reserve Bank Stock	(2,686)	0
Increase (Decrease) in Equity Securities, FV-NI	2,138	264
Net loan originations, portfolio loans	(98,056)	53,162
Payments for Affordable Housing Programs	(3,634)	0
Proceeds from the sale of OREO	900	11,461
Life insurance death benefits	1,344	1,379
Payments to Acquire Businesses, Net of Cash Acquired [Abstract]
Purchases of premises and equipment	(8,666)	(3,950)
Net cash provided by investing activities	47,239	32,699
Financing activities:
Net increase in deposits	138,828	198,518
Net decrease in short-term borrowings	(70,151)	(175,150)
Proceeds from issuance of long-term debt	75,000	25,000
Repayments of Long-term Debt	(75,000)	(125,000)
Payment, Tax Withholding, Share-based Payment Arrangement	(827)	(610)
Repurchase of common shares to be held as treasury shares	(32,952)	(5,784)
Cash dividends paid	(36,042)	(32,884)
Net cash used in financing activities	(1,144)	(115,910)
Increase in cash and cash equivalents	92,291	(22,953)
Cash and cash equivalents at beginning of year	167,214	169,112
Cash and cash equivalents at end of period	259,505	146,159
Supplemental disclosures of cash flow information:
Cash paid for interest	30,039	18,766
Income Taxes Paid	5,270	2,500
Non cash activities:
Real Estate Owned, Transfer to Real Estate Owned	715	861
Other Significant Noncash Transaction, Value of Consideration Received	11,009	0
Affordable Housing Program Obligation, Period Increase (Decrease)	10,000	0
Consumer Portfolio Segment [Member]
Changes in assets and liabilities:
Increase in prepaid dealer premiums	(2,258)	(1,079)
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	$ 2,423	$ 2,266