Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 876	$ 910
Amortization of investment securities, net	2,230	1,674
Provision for depreciation	2,121	2,049
Amortization of investment securities, net	258	16
Amortization of prepayment penalty of long-term debt	1,559	1,531
Loan originations to be sold in secondary market	(42,370)	(40,285)
Proceeds from sale of loans in secondary market	46,848	36,835
Share-based compensation expense	826	468
OREO valuation adjustments	73	118
Gain on sale of OREO, net	(100)	(134)
Bank owned life insurance income	(1,103)	(1,197)
Changes in assets and liabilities:
Increase in other assets	(7,519)	(7,018)
Decrease in other liabilities	(63)	(8)
Net cash provided by operating activities	23,116	12,884
Proceeds from maturity of:
Available-for-sale securities	40,382	341,879
Held-to-maturity securities	5,990	4,984
Purchases of:
Available-for-sale securities	0	(259,756)
Payments to Acquire Held-to-maturity Securities	(30,943)	(9,885)
Net loan originations, portfolio loans	(46,115)	10,476
Investments in qualified affordable housing projects	0	(2,847)
Proceeds from the sale of OREO	674	1,387
Life insurance death benefits	74	765
Purchases of premises and equipment, net	(1,379)	(1,581)
Net cash (used in) provided by investing activities	(31,317)	85,422
Financing activities:
Net increase in deposits	398,604	259,148
Net decrease in short-term borrowings	(174,932)	(174,599)
Proceeds from issuance of long-term debt	50,000	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	(14,373)	(14,411)
Net cash provided by financing activities	253,527	70,138
Increase in cash and cash equivalents	245,326	168,444
Cash and cash equivalents at beginning of year	146,446	149,459
Cash and cash equivalents at end of period	391,772	317,903
Supplemental disclosures of cash flow information:
Cash paid for interest	9,765	9,454
Cash paid for income taxes	7,500	0
Non cash activities:
Loans transferred to OREO	448	439
Securities acquired through payable	0	17,156
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	$ 787	$ 761