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Loans Receivable and Allowance for Loan Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | $ 322,000 | $ 1,203,000 |
Commercial and industrial (including owner occupied commercial real estate) |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 0 | 348,000 |
Manufactured housing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 322,000 | $ 855,000 |
Accruing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 11,269 |  | $ 12,021
Accruing | Commercial and industrial (including owner occupied commercial real estate) |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 68 |  | 63
Accruing | Commercial real estate - owner occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 45 |  | 0
Accruing | Manufactured housing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 8,130 |  | 8,130
Accruing | Residential real estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 3,026 |  | 3,828
Nonaccruing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 7,769 |  | 8,408
Nonaccruing | Commercial and industrial (including owner occupied commercial real estate) |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 5,519 |  | 5,939
Nonaccruing | Commercial real estate - owner occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 0 |  | 0
Nonaccruing | Manufactured housing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 1,787 |  | 1,766
Nonaccruing | Residential real estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 463 |  | 703
Total |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 19,038 |  | 20,429
Total | Commercial and industrial (including owner occupied commercial real estate) |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 5,587 |  | 6,002
Total | Commercial real estate - owner occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 45 |  | 0
Total | Manufactured housing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | 9,917 |  | 9,896
Total | Residential real estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment | $ 3,489 |  | $ 4,531

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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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