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Loans and Allowance for Loan Losses - Non-accrual loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | $ 3,270 | $ 3,751
Transfer into non-accrual | 3,494 | 1,483
Transfer to OREO | (705) |
Loans paid down/payoffs | (3,235) | (947)
Loans return to accrual status | (448) | (452)
Loans charged off | (1,134) | (565)
Balance | 1,947 | 3,270
Consumer |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 185 | 403
Transfer into non-accrual | 290 | 10
Loans paid down/payoffs | (27) | (130)
Loans return to accrual status | (58) |
Loans charged off | (204) | (98)
Balance | 186 | 185
Residential Real estate |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 2,124 | 2,508
Transfer into non-accrual | 246 | 329
Loans paid down/payoffs | (633) | (429)
Loans return to accrual status | (192) | (281)
Loans charged off | (589) | (3)
Balance | 956 | 2,124
Indirect |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 88 | 193
Transfer into non-accrual | 636 | 686
Loans paid down/payoffs | (132) | (163)
Loans return to accrual status | (135) | (171)
Loans charged off | (341) | (457)
Balance | 116 | 88
Commercial Mortgage Portfolio Segment |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 48 |
Transfer into non-accrual | 27 | 56
Loans paid down/payoffs | (48) | (1)
Loans charged off |  | (7)
Balance | 27 | 48
Construction |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 318 |
Transfer into non-accrual |  | 402
Loans paid down/payoffs | (318) | (84)
Balance |  | 318
Commercial Real Estate |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 507 | 647
Transfer into non-accrual | 2,295 |
Loans paid down/payoffs | (2,077) | (140)
Loans return to accrual status | (63) |
Balance | $ 662 | $ 507

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- Definition Amount of nonaccrual direct write-downs of financing receivables charged against the allowance. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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