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Share-Based Compensation Plans (Tables) | 9 Months Ended
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Sep. 30, 2018
Share Based Compensation [Abstract] |
Summary Of Restricted Stock Units And Performance Share Units Activity |
|  | Number of Underlying Shares |  |  | Weighted Average Per Share Grant Date Fair Value |
RSUs |  |  | 32,655 |  |  | $ | 28.50 |
PSUs |  |  | 14,855 |  |  |  | 27.25 |
Summary Of Restricted Stock Awards Activity |
|  | Number of Shares |  |  | Weighted Average Market Price at Grant Date |
Outstanding at beginning of year |  |  | 130,586 |  |  | $ | 24.32 |
Granted |  |  | 54,880 |  |  |  | 28.89 |
Vested |  |  | (23,836 | ) |  |  | 25.74 |
Forfeited |  |  | (25,251 | ) |  |  | 11.61 |
Outstanding at end of period |  |  | 136,379 |  |  | $ | 28.26 |
Summary Of Stock Option Activity |
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at beginning of year |  |  | 22,199 |  |  | $ | 18.40 |  |  |  |  |  |  |  |  |
Exercised |  |  | (17,450 | ) |  |  | 18.38 |  |  |  |  |  |  |  |  |
Expired |  |  | (4,749 | ) |  |  | 18.50 |  |  |  |  |  |  |  |  |
Outstanding and exercisable at end of period |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Share-Based Compensation Expense Included In Consolidated Statements Of Income |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Salaries and employee benefits |  | $ | 306 |  |  | $ | 248 |  |  | $ | 872 |  |  | $ | 676 |
Other noninterest expense |  |  | 32 |  |  |  | 32 |  |  |  | 225 |  |  |  | 209 |
Total share-based compensation expense |  | $ | 338 |  |  | $ | 280 |  |  | $ | 1,097 |  |  | $ | 885 |

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- Definition Schedule of Share-based Compensation, Restricted Stock Units and Performance Share Units Activity [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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