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Loans and Leases Receivable and Allowance for Loan and Lease Losses - Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) Loan | Jun. 30, 2018 USD ($) Loan | Jun. 30, 2019 USD ($) Loan | Jun. 30, 2018 USD ($) Loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loans | Loan | 2 | 16 | 14 | 25
Recorded investment | $ | $ 47 | $ 663 | $ 946 | $ 985
Number of Loans | Loan |  |  | 4 | 0
Recorded Investment | $ |  |  | $ 108 | $ 0
Commercial and industrial (including owner occupied commercial real estate) |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loans | Loan | 0 | 0 | 1 | 0
Recorded investment | $ | $ 0 | $ 0 | $ 431 | $ 0
Number of Loans | Loan |  |  | 1 | 0
Recorded Investment | $ |  |  | $ 0 | $ 0
Manufactured housing |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loans | Loan | 2 | 14 | 12 | 23
Recorded investment | $ | $ 47 | $ 450 | $ 432 | $ 772
Number of Loans | Loan |  |  | 3 | 0
Recorded Investment | $ |  |  | $ 108 | $ 0
Residential real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loans | Loan | 0 | 1 | 1 | 1
Recorded investment | $ | $ 0 | $ 200 | $ 83 | $ 200
Other consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loans | Loan | 0 | 1 | 0 | 1
Recorded investment | $ | $ 0 | $ 13 | $ 0 | $ 13

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
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