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Loans and Allowance for Loan Losses - Impaired Financing Receivables (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | $ 294 | $ 1,671
Unpaid Principal Balance with specific reserves | 294 | 1,699
Interest Income Recognized with specific reserves | 15 | 5
Specific Reserve with specific reserves | 226 | 782
Recorded Investment | 347 | 1,740
Recorded Investment with no specific reserve | 2,435 | 2,643
Unpaid Principal Balance with no specific reserve | 3,569 | 3,411
Interest Income Recognized with no specific reserve | 45 | 50
Specific Reserve | 200 | 800
Average Recorded Investment with no specific reserve | 3,179 | 3,528
Consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 89 | 160
Unpaid Principal Balance with specific reserves | 89 | 160
Interest Income Recognized with specific reserves | 3 | 5
Specific Reserve with specific reserves | 22 | 52
Recorded Investment | 136 | 205
Recorded Investment with no specific reserve | 116 | 88
Unpaid Principal Balance with no specific reserve | 457 | 88
Residential real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves |  | 1,294
Unpaid Principal Balance with specific reserves |  | 1,322
Specific Reserve with specific reserves |  | 513
Recorded Investment |  | 1,312
Recorded Investment with no specific reserve | 96 | 49
Unpaid Principal Balance with no specific reserve | 300 | 49
Interest Income Recognized with no specific reserve | 2 |
Average Recorded Investment with no specific reserve | 50 |
Commercial |  |
Financing Receivable, Impaired [Line Items] |  |
Specific Reserve with specific reserves | 204 | 217
Recorded Investment with no specific reserve | 1,267 | 1,194
Unpaid Principal Balance with no specific reserve | 1,267 | 1,194
Interest Income Recognized with no specific reserve | 39 | 39
Average Recorded Investment with no specific reserve | 1,148 | 1,632
Home Equity Portfolio Segment |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve |  | 318
Unpaid Principal Balance with no specific reserve |  | 318
Average Recorded Investment with no specific reserve |  | 322
Residential Real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Specific Reserve with specific reserves |  | 513
Installment |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve |  | 2
Unpaid Principal Balance with no specific reserve |  | 2
Average Recorded Investment with no specific reserve |  | 2
Commercial Mortgage Portfolio Segment |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 204 | 217
Unpaid Principal Balance with specific reserves | 204 | 217
Interest Income Recognized with specific reserves | 12 |
Specific Reserve with specific reserves | 204 | 217
Recorded Investment | 211 | 223
Recorded Investment with no specific reserve | 956 | 992
Unpaid Principal Balance with no specific reserve | 1,545 | 1,760
Interest Income Recognized with no specific reserve | 4 | 11
Average Recorded Investment with no specific reserve | $ 1,981 | $ 1,572

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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