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v2.4.1.9

Loans, Credit Quality Indicator (Details) (USD $) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2013 | Dec. 31, 2014
Financing Receivable by credit exposure [Abstract] |  |  |
Total | $ 192,009,000 us-gaap_NotesReceivableNet |  | $ 193,935,000 us-gaap_NotesReceivableNet
Minimum [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Percentage of dollar volume of commercial loan portfolio to be reviewed (in hundredths) | 55.00%czfs_PercentageOfCommercialLoanPortfolioToBeReviewed / us-gaap_RangeAxis = us-gaap_MinimumMember | 60.00%czfs_PercentageOfCommercialLoanPortfolioToBeReviewed / us-gaap_RangeAxis = us-gaap_MinimumMember |
Amount over which all new loans to be reviewed, minimum | 1,000,000 czfs_AmountOverWhichAllNewLoansToBeReviewedMinimum / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Amount over which all relationships to be reviewed, minimum | 1,000,000 czfs_AmountOverWhichAllRelationshipToBeReviewed / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Amount which is 30 days past due to be reviewed for all aggregate loan relationships | 750,000 czfs_AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Construction [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 6,036,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember |  | 6,353,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember
Mortgages [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 123,111,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember |  | 122,858,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember
Home Equity [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 60,727,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember |  | 62,580,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember
Commercial [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 192,701,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember |  | 190,945,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember
Agricultural [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 25,691,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember |  | 24,639,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember
Consumer [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 8,171,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 8,497,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Other Commercial Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 52,606,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |  | 47,451,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Other Agricultural Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 10,780,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember |  | 11,065,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember
State and Political Subdivision Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 85,356,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember |  | 79,717,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember
Pass [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 343,244,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 324,932,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | Construction [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 6,036,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 6,353,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | Commercial [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 175,890,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 169,383,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | Agricultural [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 20,695,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 19,575,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | Other Commercial Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 46,267,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 40,683,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | Other Agricultural Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 9,000,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 9,221,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Pass [Member] | State and Political Subdivision Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 85,356,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |  | 79,717,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Special Mention [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 13,057,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 17,482,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | Construction [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | Commercial [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 4,912,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 8,948,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | Agricultural [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 3,361,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 3,394,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | Other Commercial Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 4,109,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 4,413,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | Other Agricultural Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 675,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 727,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Special Mention [Member] | State and Political Subdivision Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Substandard [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 16,677,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 17,756,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | Construction [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | Commercial [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 11,855,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 12,614,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | Agricultural [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 1,635,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 1,670,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | Other Commercial Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 2,082,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 2,355,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | Other Agricultural Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 1,105,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 1,117,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Substandard [Member] | State and Political Subdivision Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Doubtful [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 192,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | Construction [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_ConstructionMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | Commercial [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 44,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | Agricultural [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_AgriculturalMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | Other Commercial Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 148,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | Other Agricultural Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_OtherAgriculturalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Doubtful [Member] | State and Political Subdivision Loans [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |  | 0 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = czfs_StateAndPoliticalSubdivisionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Internally Assigned Grade [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 373,170,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = czfs_InternallyAssignedGrade1Member |  | 360,170,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = czfs_InternallyAssignedGrade1Member
Performing [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 190,661,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember |  | 192,708,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
Performing [Member] | Mortgages [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 122,090,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember |  | 121,968,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
Performing [Member] | Home Equity [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 60,458,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember |  | 62,296,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
Performing [Member] | Consumer [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 8,113,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember |  | 8,444,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
Nonperforming [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 1,348,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember |  | 1,227,000 us-gaap_NotesReceivableNet / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember
Nonperforming [Member] | Mortgages [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 1,021,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember |  | 890,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember
Nonperforming [Member] | Home Equity [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | 269,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember |  | 284,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember
Nonperforming [Member] | Consumer [Member] |  |  |
Financing Receivable by credit exposure [Abstract] |  |  |
Total | $ 58,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember |  | $ 53,000 us-gaap_NotesReceivableNet / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember

X
- Definition Represents amount over which all new loans to be reviewed for all internal and external loan on aggregate basis to ensure the appropriateness of the loan grade. + References No definition available. + Details
Name: | czfs_AmountOverWhichAllNewLoansToBeReviewedMinimum
Namespace Prefix: | czfs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents amount over which all relationships to be reviewed for all internal and external loan on aggregate basis to ensure the appropriateness of the loan grade. + References No definition available. + Details
Name: | czfs_AmountOverWhichAllRelationshipToBeReviewed
Namespace Prefix: | czfs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + 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 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 + Details
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