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Loans Receivable and Allowance for Loan Losses - Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) Loan | Jun. 30, 2017 USD ($) Loan | Jun. 30, 2018 USD ($) Loan | Jun. 30, 2017 USD ($) Loan
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | Loan | 16 | 11 | 25 | 32
Recorded Investment | $ | $ 663 | $ 6,175 | $ 985 | $ 7,378
Commercial and industrial (including owner occupied commercial real estate) |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | Loan | 0 | 2 | 0 | 3
Recorded Investment | $ | $ 0 | $ 5,855 | $ 0 | $ 6,203
Manufactured housing |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | Loan | 14 | 9 | 23 | 29
Recorded Investment | $ | $ 450 | $ 320 | $ 772 | $ 1,175
Residential real estate |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | Loan | 1 | 0 | 1 | 0
Recorded Investment | $ | $ 200 | $ 0 | $ 200 | $ 0
Other |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | Loan | 1 | 0 | 1 | 0
Recorded Investment | $ | $ 13 | $ 0 | $ 13 | $ 0

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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