Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

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- Definition

Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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Share Repurchase Plan - Narrative (Details) - USD ($)	Mar. 31, 2026	Jan. 21, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Subsequent Event [Line Items]
Stock repurchase program, authorized amount	$ 100,000,000			$ 50,000,000
Stock repurchase program, remaining authorized amount	50,379,000		$ 100,000,000	$ 50,000,000	$ 50,000,000
New S&T Share Repurchase Program
Subsequent Event [Line Items]
Stock repurchase program, authorized amount		$ 100,000,000.0
Stock repurchase program, remaining authorized amount	$ 50,400,000