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Allowance for Loan Losses - Balance Of The Allowance Segregated By Segment And Class (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | $ 372 |  | $ 994 |
Collectively evaluated for impairment | 20,077 |  | 18,899 |
Allowance for credit losses | 20,449 | $ 21,461 | 19,893 | $ 19,697
AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 16,600 | 16,453 |  |
AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 576 | 524 |  |
AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 318 | 966 |  |
Collectively evaluated for impairment | 9 | 8 |  |
AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 54 |  |  |
Collectively evaluated for impairment | 2 |  |  |
Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 2,890 | 3,510 |  |
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 370 |  | 994 |
Collectively evaluated for impairment | 5,314 |  | 4,707 |
Allowance for credit losses | 5,684 | 6,172 | 5,701 | 5,535
Commercial | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 5,140 | 5,079 |  |
Commercial | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 166 | 120 |  |
Commercial | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 316 | 966 |  |
Collectively evaluated for impairment | 6 | 7 |  |
Commercial | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 54 |  |  |
Collectively evaluated for impairment | 2 |  |  |
Commercial | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction one-to-four family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 608 |  | 549 |
Allowance for credit losses | 608 | 629 | 549 | 550
Real estate construction one-to-four family | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 608 | 629 |  |
Real estate construction one-to-four family | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction one-to-four family | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction one-to-four family | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Real estate construction one-to-four family | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction other |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 1,069 |  | 1,383 |
Allowance for credit losses | 1,069 | 1,566 | 1,383 | 1,465
Real estate construction other | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 1,069 | 1,566 |  |
Real estate construction other | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction other | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate construction other | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Real estate construction other | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 2,174 |  | 2,372 |
Allowance for credit losses | 2,174 | 2,194 | 2,372 | 2,358
Real estate term owner occupied | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 2,135 | 2,154 |  |
Real estate term owner occupied | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 39 | 40 |  |
Real estate term owner occupied | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term owner occupied | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Real estate term owner occupied | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 6,379 |  | 7,207 |
Allowance for credit losses | 6,379 | 6,043 | 7,207 | 6,853
Real estate term non-owner occupied | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 6,020 | 5,680 |  |
Real estate term non-owner occupied | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 359 | 363 |  |
Real estate term non-owner occupied | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term non-owner occupied | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Real estate term non-owner occupied | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term other |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 1,025 |  | 774 |
Allowance for credit losses | 1,025 | 725 | 774 | 819
Real estate term other | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 1,014 | 725 |  |
Real estate term other | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 11 | 0 |  |
Real estate term other | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Real estate term other | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Real estate term other | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Consumer secured by 1st deeds of trust |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 2 |  | 0 |
Collectively evaluated for impairment | 303 |  | 311 |
Allowance for credit losses | 305 | 315 | 311 | 313
Consumer secured by 1st deeds of trust | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 303 | 315 |  |
Consumer secured by 1st deeds of trust | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Consumer secured by 1st deeds of trust | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 2 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Consumer secured by 1st deeds of trust | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Consumer secured by 1st deeds of trust | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Consumer other |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 315 |  | 391 |
Allowance for credit losses | 315 | 307 | 391 | 408
Consumer other | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 311 | 305 |  |
Consumer other | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 1 | 1 |  |
Consumer other | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 3 | 1 |  |
Consumer other | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Consumer other | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 2,890 |  | 1,205 |
Allowance for credit losses | 2,890 | 3,510 | $ 1,205 | $ 1,396
Unallocated | AQR Pass |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Unallocated | AQR Special Mention |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | 0 | 0 |  |
Unallocated | AQR Substandard |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Unallocated | AQR Doubtful |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  |
Collectively evaluated for impairment | 0 |  |  |
Unallocated | Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Collectively evaluated for impairment | $ 2,890 | $ 3,510 |  |

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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