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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 27, 2015 | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) subsidiaries | Dec. 31, 2016 USD ($) subsidiaries | Dec. 31, 2012 USD ($)
Nature Of Business [Line Items] |  |  |  |  |
Period For Other Than Temporary Impairment |  |  | 1 year |  |
Guaranteed Loans Past Due |  |  | 2 months 29 days |  |
Period Of Residential Mortgage Loan That Are No Longer Accruing Interest |  |  | 1 year 3 months | 1 year 3 months |
Loans Considered To Be Defaulted If Borrower Has Failed To Make Payment For Period Or More Than Period |  |  | 2 months 29 days | 2 months 29 days |
Loans Past Due |  |  | 30 days |  |
Resdiential Mortgage Loans Charge Off |  |  | 5 months 27 days |  |
Modified Repurchase Agreements Threshold |  |  | 10.00% |  |
Investment In Subsidiaries Other Real Estate Owned | subsidiaries |  |  |  | 2 |
Wholy Owned Investments Subsidiaries | subsidiaries |  |  | 2 |  |
Base Rate Historical Charge Offs Period |  |  |  | 1 year |
Cummulative Charge Offs Period |  |  |  | 2 years |
Troubled Debt Restructurings Sustained Performance Period |  |  |  | 6 months |
Business Combination Finite Lived Intangible Assets Net |  |  | $ 3,700 | $ 4,400 |
Branches Doral | 10 |  |  |  |
Wholy Owned Investments Subsidiaries FirstBank | subsidiaries |  |  | 6 |  |
Business Combination Restrospective Adjustments Threshold |  |  | 1 year |  |
Rewards liability |  |  | $ 7,000 | $ 7,100 |
Discount rate used for calculation of mortgage servicing rights value |  |  | 14.00% | 14.10% |
Loan Value Deliquency Threshold To Be Valued At Fair Value Percent |  |  | 60.00% |  |
Financing receivable, individually evaluated for impairment |  |  | $ 1,000 |  |
Financing Arrangements With Municipalities Threshold |  |  | 8 years |  |
Callable Debt Securities Held At Premium |  |  | $ 4,100 |  |
Callable Debt Securities Unamortized Premium |  |  | $ 47 |  |
Customer Related Intangible Assets Member |  |  |  |  |
Nature Of Business [Line Items] |  |  |  |  |
Finite lived Intangible Assets Acquired 1 |  | $ 1,100 |  |  |
Purchased Credit Card Relationship Intangible [Member] |  |  |  |  |
Nature Of Business [Line Items] |  |  |  |  |
Finite lived Intangible Assets Acquired 1 |  |  |  |  | $ 24,500
Open End Loans [Member] |  |  |  |  |
Nature Of Business [Line Items] |  |  |  |  |
Consumer Loans Charge Off |  |  | 5 months 27 days |  |
Consumer Auto Loans And Finance Leases [Member] |  |  |  |  |
Nature Of Business [Line Items] |  |  |  |  |
Consumer Loans Reserved |  |  | 3 months 28 days |  |
Consumer Loans Charge Off |  |  | 1 year |  |

X
- Definition The period used for calculating the base rate for historical charge offs. + References No definition available. + Details
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- Definition Number of Branches acquired in Doral Bank Acquisition. + References No definition available. + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. This item is specifically related to intangible assets acquired as result of a business combination. + References No definition available. + Details
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- Definition Threshold for restrospective adjusments to the fair value of assets acquired in a Business Combination. + References No definition available. + Details
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- Definition Amount of callable debt securities held at a premium. + References No definition available. + Details
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- Definition Period for consumer loans to be charged-off. + References No definition available. + Details
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- Definition Period required for consumer loans to be reserved. + References No definition available. + Details
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- Definition The period over which the Corporation tracks cummulative charge-offs on loans for the calculation of historical charge offs rates. + References No definition available. + Details
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- Definition Threshold of maturity to classify financing arrangements with municipalities as special obligation bonds. + References No definition available. + Details
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- Definition Past due guaranteed mortgage loans continue to accrue income for the period. + References No definition available. + Details
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- Definition The number of subsidiaries that hold and operate certain particular other real estate owned properties. + References No definition available. + Details
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- Definition Loan to value threshold of residential mortgages for evaluation for impairment purposes. + References No definition available. + Details
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- Definition Days delinquent before charge-off of credit cards. + References No definition available. + Details
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- Definition Loans are considered delinquent once they are past due 30 days as to principal or interest. + References No definition available. + Details
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- Definition The percentage difference between the cash flows under the terms of the modified repurchase agreement and the present value of the remaining cash flows under the terms of the original instrument. + References No definition available. + Details
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- Definition Threshold for recognition of impairment charges on a security. + References No definition available. + Details
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- Definition Period of residential mortgage loan that are no longer accruing interest. + References No definition available. + Details
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- Definition Period required for residential mortgage loans to recognize charge-off. + References No definition available. + Details
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- Definition Liability related to offer rewards program, related to the credit card services. + References No definition available. + Details
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Balance Type: | credit
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- Definition Threshold for individual evaluation of loans for impairment purposes. + References No definition available. + Details
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- Definition The period over which borrowers must demonstrate a sustained performance in order to reverse a modified loan to accrual status. + References No definition available. + Details
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- Definition The number of wholy owned subsidiaries controlled by the Corporation. + References No definition available. + Details
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- Definition The number of wholy owned subsidiaries controlled by FirstBank. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Details
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