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Deposits - Additional Information About Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financial Services, Banking and Thrift [Abstract]
Certificates of deposit in excess of the FDIC limit included in time deposits	$ 2,661,007	$ 2,366,648
Deposits from certain directors, executives, and other affiliates	$ 89,725	$ 67,835

X

- Definition

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Financial Services, Banking and Thrift

+ References

No definition available.

+ Details

Name:	vly_FinancialServicesBankingAndThriftAbstract
Namespace Prefix:	vly_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Time Deposits, $250,000 or More

+ References

No definition available.

+ Details

Name:	vly_TimeDeposits250000orMore
Namespace Prefix:	vly_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant