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Subordinated Debentures Subordinated Debentures Outstanding | 3 Months Ended
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Mar. 31, 2021
Subordinated Debentures Outstanding [Abstract] |
Subordinated Borrowings Disclosure [Text Block] | Subordinated Debentures Subordinated debentures outstanding are as follows:
|  | March 31, 2021 |  | December 31, 2020
| Due | Amount |  | Rate |  | Amount |  | Rate
|  | (dollars in thousands)
Owed to: |  |  |  |  |  |  |  |
First Commonwealth Bank | 2028 | $ | 49,337 |  |  | 4.875% until June 1, 2023, then LIBOR + 1.845% |  | $ | 49,314 |  |  | 4.875% until June 1, 2023, then LIBOR + 1.845%
First Commonwealth Bank | 2033 | 49,149 |  |  | 5.50% until June 1, 2028, then LIBOR + 2.37% |  | 49,131 |  |  | 5.50% until June 1, 2028, then LIBOR + 2.37%
First Commonwealth Capital Trust II | 2034 | 30,929 |  |  | LIBOR + 2.85% |  | 30,929 |  |  | LIBOR + 2.85%
First Commonwealth Capital Trust III | 2034 | 41,238 |  |  | LIBOR + 2.85% |  | 41,238 |  |  | LIBOR + 2.85%
Total |  | $ | 170,653 |  |  |  |  | $ | 170,612 |  |  |
On May 21, 2018, First Commonwealth issued ten-year subordinated notes with an aggregate principal amount of $50.0 million and a fixed-to-floating rate of 4.875%. The rate remains fixed until June 1, 2023, then adjusts on a quarterly basis to LIBOR + 1.845%. The Bank may redeem the notes, beginning with the interest payment due on June 1, 2023, in whole or in part at a redemption price equal to 100% of the principal amount of the subordinated notes, plus accrued and unpaid interest to the date of redemption. Deferred issuance costs of $0.9 million are being amortized on a straight-line basis over the term of the notes. On May 21, 2018, First Commonwealth issued fifteen-year subordinated notes with an aggregate principal amount of $50.0 million and a fixed-to-floating rate of 5.50%. The rate remains fixed until June 1, 2028, then adjusts on a quarterly basis to LIBOR + 2.37%. The Bank may redeem the notes, beginning with the interest payment due on June 1, 2028, in whole or in part at a redemption price equal to 100% of the principal amount of the subordinated notes, plus accrued and unpaid interest to the date of redemption. Deferred issuance costs of $1.1 million are being amortized on a straight-line basis over the term of the notes. First Commonwealth currently has two trusts, First Commonwealth Capital Trust II and First Commonwealth Capital Trust III, of which 100% of the common equity is owned by First Commonwealth. The trusts were formed for the purpose of issuing company obligated mandatorily redeemable capital securities to third-party investors and investing the proceeds from the sale of the capital securities solely in junior subordinated debt securities (“subordinated debentures”) of First Commonwealth. The subordinated debentures held by each trust are the sole assets of the trust. Interest on the debentures issued to First Commonwealth Capital Trust III is paid quarterly at a floating rate of LIBOR + 2.85% which is reset quarterly. Subject to regulatory approval, First Commonwealth may redeem the debentures, in whole or in part, at its option on any interest payment date at a redemption price equal to 100% of the principal amount of the debentures, plus accrued and unpaid interest to the date of the redemption. Deferred issuance costs of $0.6 million are being amortized on a straight-line basis over the term of the securities. Interest on the debentures issued to First Commonwealth Capital Trust II is paid quarterly at a floating rate of LIBOR + 2.85%, which is reset quarterly. Subject to regulatory approval, First Commonwealth may redeem the debentures, in whole or in part, at its option at a redemption price equal to 100% of the principal amount of the debentures, plus accrued and unpaid interest to the date of the redemption. Deferred issuance costs of $0.5 million are being amortized on a straight-line basis over the term of the securities.

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- Definition Subordinated Debentures Outstanding [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC's uniform net capital rule, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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