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LOAN PORTFOLIO - Selected Information on TDRs Includes Recorded Investment by Loan Class and Modification Type (Detail) - Entity Loan Modification Program [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 582,389	$ 589,795	$ 582,647	$ 557,196	$ 572,376	$ 587,219
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	70,510		74,921
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	153,366		137,949
Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,800
Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	326,703		333,902
Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,101		10,382
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	5,000
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	523		762
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,440		4,765
Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	16,124		18,031
Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,622		1,935
Interest rate below market [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,757		28,771
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	627		664
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,882		3,966
Interest rate below market [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	20,893		22,729
Interest rate below market [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,329		1,396
Interest rate below market [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Interest rate below market [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Interest rate below market [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	26		16
Interest rate below market [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Interest rate below market [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Extended Maturity [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	38,507		39,283
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	18,861		19,769
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,804		2,005
Extended Maturity [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,502		11,586
Extended Maturity [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,161		1,236
Extended Maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	523		545
Extended Maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Extended Maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,371		2,524
Extended Maturity [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,212		1,517
Extended Maturity [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	73		101
Combination of reduction in interest rate and extension of maturity [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	379,103		394,235
Combination of reduction in interest rate and extension of maturity [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,605		13,323
Combination of reduction in interest rate and extension of maturity [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	118,774		122,709
Combination of reduction in interest rate and extension of maturity [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	230,894		239,348
Combination of reduction in interest rate and extension of maturity [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	5,125		5,651
Combination of reduction in interest rate and extension of maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Combination of reduction in interest rate and extension of maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Combination of reduction in interest rate and extension of maturity [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,782		1,933
Combination of reduction in interest rate and extension of maturity [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,778		10,085
Combination of reduction in interest rate and extension of maturity [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,145		1,186
Forgiveness of principal and/or interest [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	227		275
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	227		275
Forgiveness of principal and/or interest [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forgiveness of principal and/or interest [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	20,843		2,818
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	709		2,673
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	19,991		0
Forbearance Agreement [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	143		145
Forbearance Agreement [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Forbearance Agreement [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Other Loan Modifications [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	116,952		117,265
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	37,708		38,492
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,915		9,269
Other Loan Modifications [Member] | Other Loans Member [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	62,271		60,094
Other Loan Modifications [Member] | Other Loans Member [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,259		1,824
Other Loan Modifications [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		217
Other Loan Modifications [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial Loan [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0
Other Loan Modifications [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	261		292
Other Loan Modifications [Member] | Consumer Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,134		6,429
Other Loan Modifications [Member] | Finance Lease [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 404		$ 648

X

- Definition

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+ References

No definition available.

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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://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=82895541&loc=d3e18845-111554

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