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Summary Of Significant Accounting Policies (Summary Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract] |  |  |
Interest expense | $ 11,823 | $ 9,323 | $ 6,826
Income taxes | 10,555 | 7,494 | 13,665
Real estate and other assets acquired in settlement of loans | 496 | 374 | 394
Accrued and declared unpaid dividends | 3,403 | 3,185 | 3,177
(Decrease) increase in net unsettled security purchases | (170) | (478) | 568
Securities transferred from available for sale to held to maturity |  | $ 165,238 | 12,802
Loans transferred from held for sale to held for investment |  |  | 853
Common stock issued for acquisition | 8,100 |  | 5,400
Loans and other non-cash assets, excluding goodwill and core deposit intangible asset | 4,848 |  | 1,007
Deposits and other liabilities | $ 1,845 |  | $ 1,112

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