XML 65 R50.htm IDEA: XBRL DOCUMENT
v3.20.4

Other Long-term Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Debt Disclosure [Abstract] |
Summary of Other Long-Term Debt | Other long-term debt at December 31 follows:
| 2020 |  | 2019
| Amount |  | Weighted Average Contractual Rate |  |  |  | Amount |  | Weighted Average Contractual Rate |  |
| (dollars in thousands)
Borrowings from FHLB due: |  |  |  |  |  |  |  |  |  |  |
2020 |  |  |  |  |  |  | $ | 659 |  |  | 3.84 | % |  |
2021 | $ | 50,685 |  |  | 2.32 | % |  |  |  | 50,685 |  |  | 2.32 |  |  |
2022 | 712 |  |  | 3.85 |  |  |  |  | 712 |  |  | 3.85 |  |  |
2023 | 739 |  |  | 3.86 |  |  |  |  | 739 |  |  | 3.86 |  |  |
2024 | 769 |  |  | 3.86 |  |  |  |  | 769 |  |  | 3.86 |  |  |
2025 | 799 |  |  | 3.86 |  |  |  |  |  |  |  |  |
Thereafter | 2,554 |  |  | 3.74 |  |  |  |  | 3,353 |  |  | 3.77 |  |  |
Total | $ | 56,258 |  |  |  |  |  |  | $ | 56,917 |  |  |  |  |

X
- Definition Long Term Debt Table [Text Block] + References No definition available. + Details
Name: | fcf_LongTermDebtTableTableTextBlock
Namespace Prefix: | fcf_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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