XML 35 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Impairment of Investment Securities - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 Security Bank | Jun. 30, 2012 | Jun. 30, 2013 Security Bank | Jun. 30, 2012 | Dec. 31, 2012
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Other than temporary impairment charges recognized |  | $ 0 | $ 0 |  |  |  |
Non-credit related (gains) losses on securities not expected to be sold (recognized in other comprehensive income) | (2,841,000) | 1,323,000 | (4,705,000) |  | (175,000) |  |
Continuous Unrealized Loss Position, Fair Value | 766,003,000 |  | 766,003,000 |  |  |  | 158,949,000
Amortized Cost | 1,332,619,000 |  | 1,332,619,000 |  |  |  | 1,169,613,000
Estimated Fair Value | 1,306,687,000 |  | 1,306,687,000 |  |  |  | 1,171,303,000
Number of banks and other financial institutions comprising the security | 309 |  | 309 |  |  |  |
Number of pooled securities representing senior tranches |  |  | 1 |  |  |  |
Number Of Pooled Securities with No Senior Class |  |  | 4 |  |  |  |
Amount of pooled issues that remained above investment grade | 0 |  | 0 |  |  |  |
Number of securities with no excess subordination | 7 |  | 7 |  |  |  |
Number of Securities with Excess Subordination | 4 |  | 4 |  |  |  |
Coupon rate |  |  | 7.00% |  |  |  |
Probability of default |  |  | 100.00% |  |  |  |
Projected recovery rate |  |  | 0.00% |  |  |  |
Probability percentage assigned to default bank subject to market indicators |  |  | 10.00% |  |  |  |
Probability percentage assigned to default bank |  |  | 100.00% |  |  |  |
Other than temporary impairment, credit losses recognized in earnings | 292,000 | (271,000) | 575,000 | [1] | 506,000 | [1] |
Minimum [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Subordinated tranches range | 7.00% |  | 7.00% |  |  |  |
Total principal amount of the respective securities | 5.00% |  | 5.00% |  |  |  |
Excess subordination as a percentage of current performing collateral |  |  | 10.00% |  |  |  |
Probabilities for performing collateral range |  |  | 0.33% |  |  |  |
Excess present value of future cash flows over our current book value |  |  | 6.00% |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Subordinated tranches range | 35.00% |  | 35.00% |  |  |  |
Excess subordination as a percentage of current performing collateral |  |  | 51.00% |  |  |  |
Probabilities for performing collateral range |  |  | 75.00% |  |  |  |
Excess present value of future cash flows over our current book value |  |  | 158.00% |  |  |  |
Trust preferred collateralized debt obligations [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Other than temporary impairment charges recognized | 0 | 0 |  |  |  |  |
Percent of unrealized losses | 54.00% |  | 54.00% |  |  |  |
Percentage of Current Performing Collateral | 0.00% |  | 0.00% |  |  |  |
Corporate Debt Securities [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Amortized Cost | 6,698,000 |  | 6,698,000 |  |  |  | 6,703,000
Estimated Fair Value | 6,984,000 |  | 6,984,000 |  |  |  | 6,991,000
Pooled Trust Preferred Securities [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Other than temporary impairment charges recognized | 0 | 0 |  |  |  |  |
US Government-sponsored Enterprises Debt Securities [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Percent of unrealized losses | 46.00% |  | 46.00% |  |  |  |
Equity Securities [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Other than temporary impairment charges recognized | 0 | 0 |  |  |  |  |
Continuous Unrealized Loss Position, Fair Value | 0 | 0 | 0 |  | 0 |  |
Asset Size and Coupon Rate 1 [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Collateral issued by financial institutions | 15,000,000,000 |  | 15,000,000,000 |  |  |  |
Prepayment rate |  |  | 100.00% |  |  |  |
Coupon rate |  |  | 7.00% |  |  |  |
Asset Size and Coupon Rate 2 [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Coupon rate |  |  | 7.00% |  |  |  |
Fair Value Inputs , Prepayment Rate Year One and Two |  |  | 40.00% |  |  |  |
Fair Value Inputs , Prepayment Rate After Year Two |  |  | 2.00% |  |  |  |
Asset Size and Coupon Rate 3 [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Prepayment rate |  |  | 5.00% |  |  |  |
Asset Size and Coupon Rate 3 [Member] | Minimum [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Collateral issued by financial institutions | 2,000,000,000 |  | 2,000,000,000 |  |  |  |
Asset Size and Coupon Rate 3 [Member] | Maximum [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Collateral issued by financial institutions | 15,000,000,000 |  | 15,000,000,000 |  |  |  |
Asset Size and Coupon Rate 4 [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Collateral issued by financial institutions | $ 2,000,000,000 |  | $ 2,000,000,000 |  |  |  |
Prepayment rate |  |  | 5.00% |  |  |  |
Coupon rate |  |  | 10.00% |  |  |  |
Asset Size and Coupon Rate 5 [Member] |  |  |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |  |  |
Prepayment rate |  |  | 0.00% |  |  |  |
[1] | Represents the increase in cash flows recognized in interest income during the period.

X
- Definition Amount of pooled issues that remained above investment grade. + References No definition available. + Details
Name: | fcf_AmountOfPooledIssuesThatRemainedAboveInvestmentGrade
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available-for-sale, securities in unrealized loss, percentage. + References No definition available. + Details
Name: | fcf_AvailableForSaleSecuritiesInUnrealizedLossPercentage
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Excess present value of future cash flows over our current book value. + References No definition available. + Details
Name: | fcf_ExcessPresentValueOfFutureCashFlowsOverOurCurrentBookValue
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Excess subordination as a percentage of current performing collateral. + References No definition available. + Details
Name: | fcf_ExcessSubordinationAsPercentageOfCurrentPerformingCollateral
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Inputs, Collateral + References No definition available. + Details
Name: | fcf_FairValueInputsCollateral
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value Inputs, Coupon Rate + References No definition available. + Details
Name: | fcf_FairValueInputsCouponRate
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Inputs , Prepayment Rate After Year Two + References No definition available. + Details
Name: | fcf_FairValueInputsPrepaymentRateAfterYearTwo
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Inputs , Prepayment Rate Year One and Two + References No definition available. + Details
Name: | fcf_FairValueInputsPrepaymentRateYearOneAndTwo
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of banks and other financial institutions comprising the security. + References No definition available. + Details
Name: | fcf_NumberOfBanksAndOtherFinancialInstitutionsComprisingSecurity
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of pooled securities representing senior tranches. + References No definition available. + Details
Name: | fcf_NumberOfPooledSecuritiesRepresentingSeniorTranches
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Pooled Securities with No Senior Class + References No definition available. + Details
Name: | fcf_NumberOfPooledSecuritiesWithNoSeniorClass
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Securities with Excess Subordination + References No definition available. + Details
Name: | fcf_NumberOfSecuritiesWithExcessSubordination
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Securities with No Excess Subordination + References No definition available. + Details
Name: | fcf_NumberOfSecuritiesWithNoExcessSubordination
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of principal amount in pooled security securities. + References No definition available. + Details
Name: | fcf_PercentageOfPrincipalAmountInPooledSecuritySecurities
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percent of Unrealized Losses + References No definition available. + Details
Name: | fcf_PercentOfUnrealizedLosses
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Probabilities for performing collateral range. + References No definition available. + Details
Name: | fcf_ProbabilitiesForPerformingCollateralRange
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Probability of default. + References No definition available. + Details
Name: | fcf_ProbabilityOfDefault
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Probability percentage assigned to default bank. + References No definition available. + Details
Name: | fcf_ProbabilityPercentageAssignedToDefaultBank
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Probability percentage assigned to default bank subject to market indicators. + References No definition available. + Details
Name: | fcf_ProbabilityPercentageAssignedToDefaultBankSubjectToMarketIndicators
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Projected recovery rate. + References No definition available. + Details
Name: | fcf_ProjectedRecoveryRate
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Subordinated tranches range. + References No definition available. + Details
Name: | fcf_SubordinatedTranchesRange
Namespace Prefix: | fcf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 + Details
Name: | us-gaap_AvailableForSaleSecuritiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsPrepaymentRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held due to increases in cash flows expected to be collected and recognized over the remaining life of the security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27340-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 18B -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Before tax amount of other than temporary impairment (OTTI) on a debt security, categorized as available-for-sale, recognized in other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration