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Loans (Schedule of Loans by Class Modified as Debt Restructuring) (Details) | 12 Months Ended
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Dec. 31, 2018 loan | Dec. 31, 2017 USD ($) loan | Dec. 31, 2016 loan
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | loan | 0 | 3 | 0
Pre-Modification Outstanding Recorded Investment |  | $ 505,000 |
Post-Modification Outstanding Recorded Investment |  | 505,000 |
Increase in allowance for loan losses for troubled debt restructurings |  | 149,000 |
Charge-offs due to troubled debt restructurings |  | $ 0 |
Commercial and Industrial Loans and Leases |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | loan |  | 2 |
Pre-Modification Outstanding Recorded Investment |  | $ 477,000 |
Post-Modification Outstanding Recorded Investment |  | $ 477,000 |
Commercial Real Estate Loans |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | loan |  | 1 |
Pre-Modification Outstanding Recorded Investment |  | $ 28,000 |
Post-Modification Outstanding Recorded Investment |  | $ 28,000 |

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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