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Subsequent Event (Notes) | 3 Months Ended
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Mar. 31, 2019
Subsequent Events [Abstract] |
Subsequent Events [Text Block] | Subsequent Event On April 22, 2019, the Company announced that its banking subsidiary, First Commonwealth Bank, has signed a definitive agreement to acquire 14 branches located in State College, Lock Haven, Williamsport and Lewisburg, Pennsylvania, with approximately $525 million of deposits and $120 million of retail and business loans from Santander Bank, N.A. The transaction is subject to regulatory approval and is expected to close in the third quarter of 2019.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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