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LOAN PORTFOLIO - Loans Held for Investment on Which Accrual of Interest Income had been Discontinued (Detail) - Nonaccrual [Member] - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Nonaccrual loans: |  |
Nonaccrual loans held for investment | $ 253,105 | $ 315,973
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 77,495 | 109,536
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 21,327 | 30,382
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 5,599 | 6,260
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 1,337 | 2,102
Consumer Portfolio Segment [Member] | Consumer Auto Loans [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 10,361 | 11,212
Consumer Portfolio Segment [Member] | Other Loans Member [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 6,491 | 7,865
Consumer Portfolio Segment [Member] | Finance Lease [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | 994 | 1,329
Residential Portfolio Segment [Member] |  |
Nonaccrual loans: |  |
Nonaccrual loans held for investment | $ 129,501 | $ 147,287

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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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