Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 260	$ 876
Amortization of investment securities, net	(1,506)	(1,386)
Provision for depreciation	2,135	2,121
Amortization of investment securities, net	405	258
Gain (Loss) on Sale of Investments	2,271	0
Unrealized gain loss on equity securities	(3,489)	0
Amortization of prepayment penalty on long-term debt	0	1,559
Loan originations to be sold in secondary market	(40,379)	(42,370)
Proceeds from sale of loans in secondary market	38,769	46,848
Share-based compensation expense	1,121	826
OREO valuation adjustments	207	73
Gain on sale of OREO, net	(4,321)	(100)
Bank owned life insurance income	(1,009)	(1,103)
Amortization Method Qualified Affordable Housing Project Investments, Amortization	1,851	1,864
Changes in assets and liabilities:
Increase in other assets	(1,159)	(3,366)
Decrease in other liabilities	(2,891)	(63)
Net cash provided by operating activities	21,972	23,116
Investing activities:
Proceeds from Sale of Available-for-sale Securities	252,055	0
Proceeds from maturity of:
Available-for-sale securities	41,097	40,382
Held-to-maturity securities	1,652	5,990
Purchases of:
Available-for-sale securities	(270,005)	0
Payments to Acquire Held-to-maturity Securities	0	(30,943)
Payments to Acquire Available-for-sale Securities, Equity	(101)	0
Net loan originations, portfolio loans	82,288	(46,115)
Proceeds from the sale of OREO	9,816	674
Life insurance death benefits	1,379	74
Purchases of premises and equipment, net	(2,473)	(1,379)
Net cash provided by (used in) investing activities	115,708	(31,317)
Financing activities:
Net increase in deposits	266,968	398,604
Net decrease in short-term borrowings	(207,199)	(174,932)
Proceeds from issuance of long-term debt	25,000	50,000
Repayments of Long-term Debt	(100,000)	0
Payments Related to Tax Withholding for Share-based Compensation	(610)	(347)
Repurchase of common shares to be held as treasury shares	0	(5,425)
Cash dividends paid	(14,370)	(14,373)
Net cash (used in) provided by financing activities	(30,211)	253,527
Increase in cash and cash equivalents	107,469	245,326
Cash and cash equivalents at beginning of year	169,112	146,446
Cash and cash equivalents at end of period	276,581	391,772
Supplemental disclosures of cash flow information:
Cash paid for interest	9,118	9,765
Cash paid for income taxes	0	7,500
Non cash activities:
Loans transferred to OREO	628	448
Securities acquired through payable	2,448	0
Consumer Portfolio Segment [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Increase (Decrease) in Prepaid Expense	(471)	(2,401)
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	$ 945	$ 787