XML 102 R87.htm IDEA: XBRL DOCUMENT v3.10.0.1

FAIR VALUE OF FINANCIAL INSTRUMENTS, Quantitative Information (Details) - Appraised Collateral Values [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Impaired Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired Loans	$ 5,815	$ 1,569
Impaired Loans [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Holding period	6 months	6 months
Impaired Loans [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Holding period	12 months	12 months
Impaired Loans [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Holding period	11 months 18 days	11 months
Impaired Loans [Member] | Discount for Time Since Appraisal [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	0	0
Impaired Loans [Member] | Discount for Time Since Appraisal [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	1	1
Impaired Loans [Member] | Discount for Time Since Appraisal [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	0.1922	0.3083
Impaired Loans [Member] | Selling Costs [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	0.05	0.05
Impaired Loans [Member] | Selling Costs [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	0.12	0.09
Impaired Loans [Member] | Selling Costs [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, Measurement input	0.0870	0.0835
Other Real Estate Owned [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired Loans	$ 532	$ 1,024
Other Real Estate Owned [Member] | Discount for Time Since Appraisal [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Other real estate owned, Measurement input	0.2	0.15
Other Real Estate Owned [Member] | Discount for Time Since Appraisal [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Other real estate owned, Measurement input	0.55	0.65
Other Real Estate Owned [Member] | Discount for Time Since Appraisal [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Other real estate owned, Measurement input	0.3144	0.2626

X

- Definition

Holding period, used as an input to measure fair value.

+ References

No definition available.

+ Details

Name:	czfs_FairValueInputsHoldingPeriod
Namespace Prefix:	czfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of input used to measure investment in impaired loans at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

No definition available.

+ Details

Name:	czfs_ImpairedLoansMeasurementInput
Namespace Prefix:	czfs_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_FairValueInputsQuantitativeInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

Name:	us-gaap_OtherRealEstateOwnedMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=czfs_ImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ValuationTechniqueAxis=czfs_AppraisedCollateralValuesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputCostToSellMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=czfs_OtherRealEstateOwnedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: