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Interest-Bearing Deposits - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deposits [Line Items] |  |
Deposits from principal officers, directors, and their affiliates | $ 968,918 us-gaap_Deposits | $ 942,475 us-gaap_Deposits
Total of CDs and IRAs | 19,624 us-gaap_InterestBearingDomesticDepositTimeDeposits |
Principal officers, directors, and their affiliates [Member] |  |
Deposits [Line Items] |  |
Deposits from principal officers, directors, and their affiliates | $ 6,882 us-gaap_Deposits / us-gaap_TitleOfIndividualAxis = fcza_OfficersDirectorsAndAffiliatesMember | $ 8,606 us-gaap_Deposits / us-gaap_TitleOfIndividualAxis = fcza_OfficersDirectorsAndAffiliatesMember

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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition Amount of interest-bearing domestic time deposits. Time deposits bear interest for a fixed, stated period of time and include certificate of deposits and individual retirement accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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