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v3.19.2

Recent Accounting Pronouncements (Details) - ASU 2016-02 [Member] - Forecast [Member] - Maximum [Member] | Dec. 31, 2019
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Right-of-use assets | 1.00%
Operating lease liabilities | 1.00%

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- Definition Percentage amount of increase (decrease) in lessee's present value of lessee's discounted obligation for lease payments from operating lease. + References No definition available. + Details
Name: | czfs_OperatingLeaseLiabilityPercentage
Namespace Prefix: | czfs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage amount of increase (decrease) in lessee's right to use underlying asset under operating lease. + References No definition available. + Details
Name: | czfs_OperatingLeaseRightOfUseAssetPercentage
Namespace Prefix: | czfs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |