XML 57 R45.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Right-Of-Use Assets and Lease Liabilities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Leases [Abstract] |
Finance and Operating Lease Details | The following table presents our lease expense for finance and operating leases for the years ended December 31:
(dollars in thousands) |  | 2021 |  | 2020 |  | 2019
Operating lease expense(1) |  | $ | 5,135 |  |  | $ | 5,711 |  |  | $ | 4,221 |
Amortization of ROU assets - finance leases(1) |  | 224 |  |  | 224 |  |  | 101 |
Interest on lease liabilities - finance leases (2) |  | 74 |  |  | 84 |  |  | 74 |
Total Lease Expense |  | $ | 5,433 |  |  | $ | 6,019 |  |  | $ | 4,396 |
(1) Included in occupancy expense in our Consolidated Statements of Net Income. (2) Included in borrowings interest expense in our Consolidated Statements of Net Income.
The following table presents our ROU assets, weighted average term and the discount rates for finance and operating leases as of December 31:
(dollars in thousands) |  |  |  | 2021 |  | 2020
Operating Leases |  |  |  |  |  |
ROU assets |  |  |  | $ | 44,067 |  |  | $ | 46,245 |
Operating cash flows |  |  |  | $ | 6,570 |  |  | $ | 6,489 |
Finance Leases |  |  |  |  |  |
ROU assets |  |  |  | $ | 1,055 |  |  | $ | 1,278 |
Operating cash flows |  |  |  | $ | 74 |  |  | $ | 84 |
Financing cash flows |  |  |  | $ | 194 |  |  | $ | 180 |
Weighted Average Lease Term - Years |  |  |  |  |  |
Operating leases |  |  |  | 18.9 |  | 18.7
Finance leases |  |  |  | 12.4 |  | 12.1
Weighted Average Discount Rate |  |  |  |  |  |
Operating leases |  |  |  | 5.82 | % |  | 5.90 | %
Finance leases |  |  |  | 5.91 | % |  | 5.81 | %
Finance and Operating Lease Details | The following table presents our lease expense for finance and operating leases for the years ended December 31:
(dollars in thousands) |  | 2021 |  | 2020 |  | 2019
Operating lease expense(1) |  | $ | 5,135 |  |  | $ | 5,711 |  |  | $ | 4,221 |
Amortization of ROU assets - finance leases(1) |  | 224 |  |  | 224 |  |  | 101 |
Interest on lease liabilities - finance leases (2) |  | 74 |  |  | 84 |  |  | 74 |
Total Lease Expense |  | $ | 5,433 |  |  | $ | 6,019 |  |  | $ | 4,396 |
(1) Included in occupancy expense in our Consolidated Statements of Net Income. (2) Included in borrowings interest expense in our Consolidated Statements of Net Income.
The following table presents our ROU assets, weighted average term and the discount rates for finance and operating leases as of December 31:
(dollars in thousands) |  |  |  | 2021 |  | 2020
Operating Leases |  |  |  |  |  |
ROU assets |  |  |  | $ | 44,067 |  |  | $ | 46,245 |
Operating cash flows |  |  |  | $ | 6,570 |  |  | $ | 6,489 |
Finance Leases |  |  |  |  |  |
ROU assets |  |  |  | $ | 1,055 |  |  | $ | 1,278 |
Operating cash flows |  |  |  | $ | 74 |  |  | $ | 84 |
Financing cash flows |  |  |  | $ | 194 |  |  | $ | 180 |
Weighted Average Lease Term - Years |  |  |  |  |  |
Operating leases |  |  |  | 18.9 |  | 18.7
Finance leases |  |  |  | 12.4 |  | 12.1
Weighted Average Discount Rate |  |  |  |  |  |
Operating leases |  |  |  | 5.82 | % |  | 5.90 | %
Finance leases |  |  |  | 5.91 | % |  | 5.81 | %
Maturity Analysis of Lease Liabilities for Operating Leases | The following table presents the maturity analysis of lease liabilities for finance and operating leases as of December 31, 2021:
(dollars in thousands) |  |  |  |  |  |
Maturity Analysis |  | Finance | Operating |  | Total
2022 |  | $ | 225 |  |  | $ | 4,707 |  |  | $ | 4,932 |
2023 |  | 129 |  |  | 4,519 |  |  | 4,648 |
2024 |  | 130 |  |  | 4,512 |  |  | 4,642 |
2025 |  | 132 |  |  | 4,544 |  |  | 4,676 |
2026 |  | 133 |  |  | 4,574 |  |  | 4,707 |
Thereafter |  | 1,012 |  |  | 64,040 |  |  | 65,052 |
Total |  | 1,761 |  |  | 86,896 |  |  | 88,657 |
Less: Present value discount |  | (561) |  |  | (36,830) |  |  | (37,391) |
Lease Liabilities |  | $ | 1,200 |  |  | $ | 50,066 |  |  | $ | 51,266 |
Maturity Analysis of Lease Liabilities for Finance Leases | The following table presents the maturity analysis of lease liabilities for finance and operating leases as of December 31, 2021:
(dollars in thousands) |  |  |  |  |  |
Maturity Analysis |  | Finance | Operating |  | Total
2022 |  | $ | 225 |  |  | $ | 4,707 |  |  | $ | 4,932 |
2023 |  | 129 |  |  | 4,519 |  |  | 4,648 |
2024 |  | 130 |  |  | 4,512 |  |  | 4,642 |
2025 |  | 132 |  |  | 4,544 |  |  | 4,676 |
2026 |  | 133 |  |  | 4,574 |  |  | 4,707 |
Thereafter |  | 1,012 |  |  | 64,040 |  |  | 65,052 |
Total |  | 1,761 |  |  | 86,896 |  |  | 88,657 |
Less: Present value discount |  | (561) |  |  | (36,830) |  |  | (37,391) |
Lease Liabilities |  | $ | 1,200 |  |  | $ | 50,066 |  |  | $ | 51,266 |

X
- Definition Assets And Liabilities, Lessee [Table Text Block] + References No definition available. + Details
Name: | stba_AssetsAndLiabilitiesLesseeTableTextBlock
Namespace Prefix: | stba_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
Name: | us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration