Number of financing receivbales with three month deferred payment arregements.

No definition available.

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- Definition

The time during which a borrower does not have to pay interest or repay the principal on a loan.

+ 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

The increase (decrease) during the reporting period in outstanding loans including accrued interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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LOAN PORTFOLIO - Natural Disaster Deferal Program - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) numberofcontracts	Dec. 31, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 8,858,123	$ 8,850,476	$ 8,886,873
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	1,944,713	1,749,897	1,716,628
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,163,208	3,290,957	$ 3,296,031
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,750,202	$ 3,809,622
Financing Receivables 30 To 89 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	59,500
Increase (Decrease) in Finance Receivables	(51,700)
Financing Receivables 30 To 89 Days Past Due [Member] \| Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	73,200
Increase (Decrease) in Finance Receivables	(42,700)
Financing Receivables 30 To 89 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,900
Increase (Decrease) in Finance Receivables	$ (13,800)
Hurricane [Member] \| Natural Disaster Payment Deferral Program [Member] \| Financing Receivable Equal To Less Than 60 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Deferral Period		3 months
Hurricane [Member] \| Natural Disaster Payment Deferral Program [Member] \| Financing Receivable Equal To Less Than 60 Days Past Due [Member] \| Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Deferral Period		3 months
Financing Receivable Deferral Payment Number Of Agreements \| numberofcontracts		9,588
Loans and Leases Receivable, Gross		$ 1,300,000
Hurricane [Member] \| Natural Disaster Payment Deferral Program [Member] \| Financing Receivables Current [Member] \| Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Deferral Period		3 months
Financing Receivable Deferral Payment Number Of Agreements \| numberofcontracts		351
Loans and Leases Receivable, Gross		$ 1,200,000