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LOANS HELD FOR INVESTMENT - Corporation's TDR Activity (Detail) - Entity Loan Modification Program [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Beginning Balance of TDRs | $ 450,078 | $ 496,207 | $ 479,196 | $ 487,997
New TDRs | 23,078 | 3,187 | 30,216 | 31,733
Increases to existing TDRs (disbursements) | 0 | 2,210 | 57 | 5,821
Charge-offs post modification | (13,211) | (4,548) | (16,706) | (8,063)
Sales, net of charge-offs | (17,492) | 0 | (17,492) | 0
Foreclosures | (1,074) | (309) | (2,684) | (1,947)
Removed from TDR classification | 0 | 0 | (6,023) | 0
Paid-off and partial payments | (12,779) | (8,132) | (37,964) | (26,926)
Ending balance of TDRs | 428,600 | $ 488,615 | 428,600 | $ 488,615
Mortgage Receivable [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Sales, net of charge-offs | (52,500) |  | (52,500) |
Residential Portfolio Segment [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Charge-offs post modification | $ (12,500) |  | $ (29,900) |

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- Definition Recorded investment in loans that were modified under troubled debt restructurings during the period. + References No definition available. + Details
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- Definition Repayments related to Trouble Debt Restructuring Loans. + References No definition available. + Details
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- Definition Total loans that had been previously modified under troubled debt restructurings that are compliance with the terms of the restructuring agreement, and yield a market interest rate at the time of the restructuring. + References No definition available. + Details
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- Definition Financing Receivable, Troubled Debt Restructuring, Sales, Net of Charge Offs + References No definition available. + Details
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- Definition Amount of real estate investments acquired through foreclosure during the period related to troubled debt restructurings. + References No definition available. + Details
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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 of financing receivable modified as troubled debt restructuring. + 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=121611835&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
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