XML 103 R69.htm IDEA: XBRL DOCUMENT
v3.20.1

INVESTMENT SECURITIES, Gross Gains and Losses, Available for Sale Securities (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) Security | Dec. 31, 2018 USD ($) Security | Dec. 31, 2017 USD ($) Security
Debt Securities, Available-for-sale, Sale [Abstract] |  |  |
Proceeds from sale of securities available-for-sale | $ 10,489 | $ 27,149 | $ 58,177
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities | 25 | 160 | 1,205
Gross losses on available for sale securities | (1) | (179) | (170)
Net (losses) gains | 24 | (19) | 1,035
Equity securities [Abstract] |  |  |
Net gains recognized in equity securities during the period | 120 | 0 | 0
Less: Net gains realized on the sale of equity securities during the period | 0 | 0 |
Net unrealized gains | 120 | 0 |
Investment securities pledged as collateral | 209,096 | 221,191 |
U.S. Agency Securities [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities | 1 |  | $ 23
Gross losses on available for sale securities | $ (1) | $ (179) |
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security | 2 |  | 10
Available-for-sale securities sold at a gross loss | Security | 1 | 7 |
U.S. Treasuries [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities | $ 24 |  |
Gross losses on available for sale securities |  |  | $ (170)
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security | 4 |  |
Available-for-sale securities sold at a gross loss | Security |  |  | 14
Obligations of State and Political Subdivisions [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities |  | $ 160 |
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security |  | 14 |
Interest-bearing Deposits [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities |  |  | $ 13
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security |  |  | 13
Mortgage-backed Securities in Government Sponsored Entities [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities |  |  | $ 20
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security |  |  | 1
Equity Securities in Financial Institutions [Member] |  |  |
Realized investment gains (losses) [Abstract] |  |  |
Gross gains on available for sale securities |  |  | $ 1,149
Equity securities [Abstract] |  |  |
Available-for-sale securities sold at a gross gain | Security |  |  | 5

X
- Definition The number of available-for-sale securities sold for a gross gain during the period. + References No definition available. + Details
Name: | czfs_AvailableForSaleInvestmentSecuritiesSoldAtGrossGainDuringPeriod
Namespace Prefix: | czfs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of available-for-sale securities sold for a gross loss during the period. + References No definition available. + Details
Name: | czfs_AvailableForSaleInvestmentSecuritiesSoldAtGrossLossDuringPeriod
Namespace Prefix: | czfs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References No definition available. + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleRealizedGain
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleSaleAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
Name: | us-gaap_EquitySecuritiesFvNiGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquitySecuritiesFvNiGainLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
Name: | us-gaap_EquitySecuritiesFvNiRealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
Name: | us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_InterestBearingDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |