Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 5,457	$ 3,547
Amortization of investment securities, net	4,604	3,504
Provision for depreciation	4,284	4,178
Amortization of investment securities, net	597	38
Amortization of prepayment penalty of long-term debt	3,107	3,069
Loan originations to be sold in secondary market	(106,685)	(110,666)
Proceeds from sale of loans in secondary market	107,046	108,009
Share-based compensation expense	1,389	792
OREO valuation adjustments	345	339
Gain on sale of OREO, net	(153)	(296)
Bank owned life insurance income	(2,217)	(2,246)
Changes in assets and liabilities:
Increase in other assets	(10,610)	(7,074)
Decrease in other liabilities	(4,394)	(2,543)
Net cash provided by operating activities	40,006	37,173
Proceeds from maturity of:
Available-for-sale securities	83,308	570,242
Held-to-maturity securities	9,371	11,155
Purchases of:
Available-for-sale securities	(14,965)	(414,700)
Payments to Acquire Held-to-maturity Securities	(72,258)	(41,566)
Net loan originations, portfolio loans	(94,207)	(55,675)
Investments in qualified affordable housing projects	0	(4,316)
Proceeds from the sale of OREO	1,688	3,092
Life insurance death benefits	74	1,050
Purchases of premises and equipment, net	(2,474)	(3,929)
Net cash (used in) provided by investing activities	(89,463)	65,353
Financing activities:
Net increase in deposits	439,620	276,237
Net decrease in short-term borrowings	(211,007)	(183,511)
Proceeds from issuance of long-term debt	150,000	0
Repayments of Subordinated Debt	(30,000)	0
Payments Related to Tax Withholding for Share-based Compensation	(347)	0
Repurchase of common shares to be held as treasury shares	(5,425)	0
Cash dividends paid	(28,751)	(28,822)
Net cash provided by financing activities	314,090	63,904
Increase in cash and cash equivalents	264,633	166,430
Cash and cash equivalents at beginning of year	146,446	149,459
Cash and cash equivalents at end of period	411,079	315,889
Supplemental disclosures of cash flow information:
Cash paid for interest	20,258	19,017
Cash paid for income taxes	11,220	8,980
Non cash activities:
Loans transferred to OREO	2,891	2,147
Securities acquired through payable	0	4,631
Affordable Housing Program Obligation, Period Increase (Decrease)	7,000	0
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	$ 2,063	$ 2,162