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LOAN PORTFOLIO - Corporation's TDR Activity (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule Of Financing Receivables [Line Items] |  |  |  |  |  |
Beginning Balance of TDRs | $ 647,048 |  | $ 661,591 |  | $ 694,453 |
New TDRs | 93,837 |  | 84,942 |  | 111,890 |
Increases to existing TDRs (disbursements) | 6,575 |  | 3,921 |  | 1,018 |
Charge-offs post modification | (32,963) | [1] | (24,876) | [2] | (64,116) | [2]
Financing Receivable Modifications Sold | (53,245) |  | (3,761) |  | (44,048) |
Foreclosures | (25,059) |  | (16,834) |  | (39,706) |
Removed from TDR classification | 0 |  | (3,031) |  | 0 |
TDRs transferred from (to) held for sale | 0 |  | 0 |  | 40,005 | [3]
Paid-off and partial payments | (48,974) |  | (54,904) |  | (37,905) |
Ending balance of TDRs | $ 587,219 |  | $ 647,048 |  | $ 661,591 |
[1] | For the year ended December 31, 2017, includes a $10.7 million charge-off related to the sale of the PREPA credit line.
[2] | For the year ended December 31, 2016, includes $1.3 million of charge-offs related to TDRs included in the sale of the $16.3 million pool of non-performing assets. For the year ended December 31, 2015, includes $45.3 million of charge-offs related to TDRs included in the bulk sale of assets.
[3] | During the third quarter of 2015, upon the signing of a new agreement with the borrower, the Corporation changed its intent to sell a $40.0 million construction loan in the Virgin Islands. Accordingly, the loan was transferred back from held for sale to held for investment and continues to be classified as a TDR and a non-performing loan.

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- Definition Disbursements during the period on existing commitments of TDRs loans. + References No definition available. + Details
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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 Financing receivable modifications sold 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 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 Schedule Of Financing Receivables [Line Items] + References No definition available. + Details
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- Definition Troubled debt restrcuturings transferred from (to) loans held for sale during the period. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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