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Note Guarantees (Other Guarantees) - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
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Guarantor Obligations [Line Items] |  |
Funds Advanced To Investors Under Servicing Agreements | $ 94,298 | $ 107,299
Debt Securities Payable | Popular, Inc. Holding Co. |  |
Guarantor Obligations [Line Items] |  |
Guarantees, unamortized balance of the obligations | 94,000 | 149,000
Financial Standby Letter Of Credit |  |
Guarantor Obligations [Line Items] |  |
Guarantees, unamortized balance of the obligations | 300 | 300
Guarantee Type, Other | Capital securities (trust preferred securities) | Popular, Inc. Holding Co. |  |
Guarantor Obligations [Line Items] |  |
Guarantees, unamortized balance of the obligations | $ 374,000 | $ 427,000

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- Definition This balances represents the total of funds advanced to investors under servicing agreements. As stated in the note, under these servicing agreements, the Corporation is required to advance to investors the payment of principal, interest, taxes and insurance, if such payments have not been received from the borrowers. + References No definition available. + Details
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248 + Details
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