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Allowance for Loan Losses - Allowance For Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | $ 21,461 | $ 19,697
Charge-Offs | (1,104) | (279)
Recoveries | 92 | 75
Provision (benefit) | 0 | 400
Balance, end of period | 20,449 | 19,893
Balance, end of period: Individually evaluated for impairment | 372 | 994
Balance, end of period: collectively evaluated for impairment | 20,077 | 18,899
Commercial |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 6,172 | 5,535
Charge-Offs | (965) | (262)
Recoveries | 89 | 73
Provision (benefit) | 388 | 355
Balance, end of period | 5,684 | 5,701
Balance, end of period: Individually evaluated for impairment | 370 | 994
Balance, end of period: collectively evaluated for impairment | 5,314 | 4,707
Real estate construction one-to-four family |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 629 | 550
Charge-Offs | 0 | 0
Recoveries | 0 | 0
Provision (benefit) | (21) | (1)
Balance, end of period | 608 | 549
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 608 | 549
Real estate construction other |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 1,566 | 1,465
Charge-Offs | 0 | 0
Recoveries | 0 | 0
Provision (benefit) | (497) | (82)
Balance, end of period | 1,069 | 1,383
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 1,069 | 1,383
Real estate term owner occupied |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 2,194 | 2,358
Charge-Offs | 0 | 0
Recoveries | 0 | 0
Provision (benefit) | (20) | 14
Balance, end of period | 2,174 | 2,372
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 2,174 | 2,372
Real estate term non-owner occupied |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 6,043 | 6,853
Charge-Offs | 0 | 0
Recoveries | 0 | 0
Provision (benefit) | 336 | 354
Balance, end of period | 6,379 | 7,207
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 6,379 | 7,207
Real estate term other |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 725 | 819
Charge-Offs | 0 | 0
Recoveries | 1 | 0
Provision (benefit) | 299 | (45)
Balance, end of period | 1,025 | 774
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 1,025 | 774
Consumer secured by 1st deeds of trust |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 315 | 313
Charge-Offs | (89) | 0
Recoveries | 1 | 0
Provision (benefit) | 78 | (2)
Balance, end of period | 305 | 311
Balance, end of period: Individually evaluated for impairment | 2 | 0
Balance, end of period: collectively evaluated for impairment | 303 | 311
Consumer other |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 307 | 408
Charge-Offs | (50) | (17)
Recoveries | 1 | 2
Provision (benefit) | 57 | (2)
Balance, end of period | 315 | 391
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | 315 | 391
Unallocated |  |
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |
Balance, beginning of period | 3,510 | 1,396
Charge-Offs | 0 | 0
Recoveries | 0 | 0
Provision (benefit) | (620) | (191)
Balance, end of period | 2,890 | 1,205
Balance, end of period: Individually evaluated for impairment | 0 | 0
Balance, end of period: collectively evaluated for impairment | $ 2,890 | $ 1,205

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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 A valuation allowance for financing receivables that are expected to be uncollectible. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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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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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually 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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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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 (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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