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RESTRICTIONS ON CASH AND DUE FROM BANKS (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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RESTRICTIONS ON CASH AND DUE FROM BANKS [Abstract] |
Cash FDIC insured amount, maximum | $ 250

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- References No definition available. + Details
Name: | czfs_RestrictionsOnCashAndDueFromBanksAbstract
Namespace Prefix: | czfs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashFDICInsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant