XML 101 R95.htm IDEA: XBRL DOCUMENT v3.25.3

Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Lines of credit	$ 5,326,918	$ 3,960,185
Loans approved but not closed	496,377	365,529
Overdraft limits	555,156	387,591
Letters of credit	60,924	47,879
Contingent obligations and other guarantees	$ 39,773	$ 16,574

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-15

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

+ Details

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

X

- Definition

Contingent obligations to purchase loans funded by other entities.

+ References

No definition available.

+ Details

Name:	wsbc_ContingentObligationsToPurchaseLoansFundedByOtherEntities
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Unused portions of various lines of credit products.

+ References

No definition available.

+ Details

Name:	wsbc_LinesOfCredit
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Credit offerings by the bank to customer in which the customer has either not completed the closing or accepted the offer.

+ References

No definition available.

+ Details

Name:	wsbc_LoansApprovedButNotClosed
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Unused portion of available funds under overdraft programs on deposit programs.

+ References

No definition available.

+ Details

Name:	wsbc_OverdraftLimits
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant