XML 72 R58.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Regulatory Matters (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Regulatory Capital Requirements Under Banking Regulations [Abstract] |
Summary of Risk-Based Capital Amounts and Ratios | The following table summarizes risk-based capital amounts and ratios for S&T and S&T Bank:
| Actual |  | Minimum Regulatory Capital Requirements |  | To be Well Capitalized Under Prompt Corrective Action Provisions
(dollars in thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
As of December 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
S&T | $ | 1,112,126 |  |  | 11.98 | % |  | $ | 371,211 |  |  | 4.00 | % |  | $ | 464,014 |  |  | 5.00 | %
S&T Bank | 1,060,010 |  |  | 11.43 | % |  | 371,002 |  |  | 4.00 | % |  | 463,752 |  |  | 5.00 | %
Common Equity Tier 1 ratio |  |  |  |  |  |  |  |  |  |  |
S&T | 1,088,126 |  |  | 14.58 | % |  | 335,888 |  |  | 4.50 | % |  | 485,172 |  |  | 6.50 | %
S&T Bank | 1,060,010 |  |  | 14.21 | % |  | 335,722 |  |  | 4.50 | % |  | 484,932 |  |  | 6.50 | %
Tier 1 Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 1,112,126 |  |  | 14.90 | % |  | 447,851 |  |  | 6.00 | % |  | 597,134 |  |  | 8.00 | %
S&T Bank | 1,060,010 |  |  | 14.21 | % |  | 447,629 |  |  | 6.00 | % |  | 596,839 |  |  | 8.00 | %
Total Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 1,230,497 |  |  | 16.49 | % |  | 597,134 |  |  | 8.00 | % |  | 746,418 |  |  | 10.00 | %
S&T Bank | 1,178,335 |  |  | 15.79 | % |  | 596,839 |  |  | 8.00 | % |  | 746,049 |  |  | 10.00 | %
As of December 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
S&T | $ | 1,034,828 |  |  | 11.21 | % |  | $ | 369,297 |  |  | 4.00 | % |  | $ | 461,621 |  |  | 5.00 | %
S&T Bank | 995,824 |  |  | 10.79 | % |  | 369,133 |  |  | 4.00 | % |  | 461,416 |  |  | 5.00 | %
Common Equity Tier 1 ratio |  |  |  |  |  |  |  |  |  |  |
S&T | 1,010,828 |  |  | 13.37 | % |  | 340,159 |  |  | 4.50 | % |  | 491,341 |  |  | 6.50 | %
S&T Bank | 995,824 |  |  | 13.18 | % |  | 339,954 |  |  | 4.50 | % |  | 491,045 |  |  | 6.50 | %
Tier 1 Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 1,034,828 |  |  | 13.69 | % |  | 453,545 |  |  | 6.00 | % |  | 604,727 |  |  | 8.00 | %
S&T Bank | 995,824 |  |  | 13.18 | % |  | 453,272 |  |  | 6.00 | % |  | 604,362 |  |  | 8.00 | %
Total Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 1,154,376 |  |  | 15.27 | % |  | 604,727 |  |  | 8.00 | % |  | 755,909 |  |  | 10.00 | %
S&T Bank | 1,115,315 |  |  | 14.76 | % |  | 604,362 |  |  | 8.00 | % |  | 755,453 |  |  | 10.00 | %

X
- Definition Regulatory Capital Requirements Under Banking Regulations + References No definition available. + Details
Name: | stba_RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract
Namespace Prefix: | stba_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B + Details
Name: | us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration