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Subordinated Debentures (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Subordinated Debentures [Abstract] |
Subordinated Debentures Outstanding | Subordinated Debentures outstanding at December 31 are as follows:
|  |  | 2017 |  | 2016
| Due |  | Amount |  | Rate |  | Amount |  | Rate
|  |  | (dollars in thousands)
Owed to: |  |  |  |  |  |  |  |  |
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 |  |  | $ | 72,167 |  |  |  |  | $ | 72,167 |  |  |

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- Definition Disclosure - Subordinated Debentures [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC uniform net capital rules for broker-dealers, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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