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LOAN PORTFOLIO - Corporation's Commercial Credit Exposure (Parenthetical) (Detail) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net | $ 33,630 | $ 43,186
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net | 0 | 1,725
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net | 0 | 3,015
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net | 7,144 | 11,371
Nonperforming Financing Receivable [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net | $ 7,100 | 16,100
Nonperforming Financing Receivable [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net |  | 1,700
Nonperforming Financing Receivable [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net |  | 3,000
Nonperforming Financing Receivable [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans Receivable Held For Sale Net |  | $ 11,400

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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