XML 50 R35.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Capital | 12 Months Ended
--- | ---
Dec. 31, 2018
Disclosure Capital Additional Information [Abstract] |
Capital | Capital In 2012, First Commonwealth announced a $50.0 million common stock repurchase program. Additional share repurchase programs were authorized for up to $25.0 million in shares of the Company’s common stock for each year from 2013 to 2016. The repurchase program was suspended in July 2016 as a result of the acquisition of five branches in northern Ohio which management believes represents a better use of capital for shareholder. Repurchases under all programs resulted in a total of 16,665,735 shares repurchased at an average price of $7.55 per share. In 2018, First Commonwealth announced a $25.0 million common stock repurchase program. This program was completed prior to the end of 2018 and resulted in a total of 1,843,373 shares repurchased at an average price of $13.58.

X
- Definition Disclosure - Capital - Additional Information [Abstract] + References No definition available. + Details
Name: | fcf_DisclosureCapitalAdditionalInformationAbstract
Namespace Prefix: | fcf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
Name: | us-gaap_StockholdersEquityNoteDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration