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v3.19.3.a.u2

Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2019
Banking and Thrift [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, 2019 |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
S&T | $ | 854,146 |  |  | 10.29 | % |  | $ | 331,925 |  |  | 4.00 | % |  | $ | 414,907 |  |  | 5.00 | %
S&T Bank | 832,113 |  |  | 10.04 | % |  | 331,355 |  |  | 4.00 | % |  | 414,194 |  |  | 5.00 | %
Common Equity Tier 1 (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 825,146 |  |  | 11.43 | % |  | 324,745 |  |  | 4.50 | % |  | 469,077 |  |  | 6.50 | %
S&T Bank | 832,113 |  |  | 11.56 | % |  | 324,048 |  |  | 4.50 | % |  | 468,069 |  |  | 6.50 | %
Tier 1 Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 854,146 |  |  | 11.84 | % |  | 432,994 |  |  | 6.00 | % |  | 577,325 |  |  | 8.00 | %
S&T Bank | 832,113 |  |  | 11.56 | % |  | 432,064 |  |  | 6.00 | % |  | 576,085 |  |  | 8.00 | %
Total Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 954,094 |  |  | 13.22 | % |  | 577,325 |  |  | 8.00 | % |  | 721,656 |  |  | 10.00 | %
S&T Bank | 922,310 |  |  | 12.81 | % |  | 576,085 |  |  | 8.00 | % |  | 720,106 |  |  | 10.00 | %
As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
S&T | $ | 689,778 |  |  | 10.05 | % |  | $ | 274,497 |  |  | 4.00 | % |  | $ | 343,121 |  |  | 5.00 | %
S&T Bank | 659,304 |  |  | 9.63 | % |  | 273,820 |  |  | 4.00 | % |  | 342,275 |  |  | 5.00 | %
Common Equity Tier 1 (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 669,778 |  |  | 11.38 | % |  | 264,933 |  |  | 4.50 | % |  | 382,681 |  |  | 6.50 | %
S&T Bank | 659,304 |  |  | 11.23 | % |  | 264,127 |  |  | 4.50 | % |  | 381,517 |  |  | 6.50 | %
Tier 1 Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 689,778 |  |  | 11.72 | % |  | 353,244 |  |  | 6.00 | % |  | 470,992 |  |  | 8.00 | %
S&T Bank | 659,304 |  |  | 11.23 | % |  | 352,170 |  |  | 6.00 | % |  | 469,560 |  |  | 8.00 | %
Total Capital (to Risk-Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
S&T | 777,913 |  |  | 13.21 | % |  | 470,992 |  |  | 8.00 | % |  | 588,741 |  |  | 10.00 | %
S&T Bank | 747,438 |  |  | 12.73 | % |  | 469,560 |  |  | 8.00 | % |  | 586,950 |  |  | 10.00 | %

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