REGULATORY MATTERS (Details) (USD $)	12 Months Ended
Dec. 31, 2014 Category	Dec. 31, 2013
Dividend Restrictions [Abstract]
Number of preceding years retained net income used for restrictions on dividend declaration	2 years
Dividends that can be declared without the approval of the Comptroller of the Currency	$ 9,189,000
Loans [Abstract]
Regulatory lending limit	14,625,000czfs_RegulatoryLendingLimit
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Number of capital categories	5czfs_NumberOfCapitalCategories
Total risk-based capital to average assets to be considered well capitalized, Minimum (in hundredths)	10.00%
Tier 1 risk-based capital to average assets ratio to be considered well capitalized, Minimum (in hundredths)	6.00%
Tier 1 leverage capital to average assets to be considered well capitalized, Minimum (in hundredths)	5.00%
Bank [Member]
Actual Amount [Abstract]
Total capital (to risk-weighted assets)	97,498,000	97,863,000
Tier 1 capital (to risk-weighted assets)	90,500,000	90,639,000
Tier 1 capital (to average assets)	90,500,000	90,639,000
Actual Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	16.97%	17.35%
Tier 1 capital (to risk-weighted assets) (in hundredths)	15.75%	16.07%
Tier 1 capital (to average assets) (in hundredths)	10.00%	10.18%
For Capital Adequacy Purposes Amount [Abstract]
Total capital (to risk-weighted assets)	45,969,000	45,135,000
Tier 1 capital (to risk-weighted assets)	22,985,000	22,567,000
Tier 1 capital (to average assets)	36,218,000	35,615,000
For Capital Adequacy Purposes Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	8.00%	8.00%
Tier 1 capital (to risk-weighted assets) (in hundredths)	4.00%	4.00%
Tier 1 capital (to average assets) (in hundredths)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount [Abstract]
Total capital (to risk-weighted assets)	57,462,000	56,418,000
Tier 1 capital (to risk-weighted assets)	34,477,000	33,851,000
Tier 1 capital (to average assets)	45,273,000	44,519,000
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%	10.00%
Tier 1 capital (to risk-weighted assets) (in hundredths)	6.00%	6.00%
Tier 1 capital (to average assets) (in hundredths)	5.00%	5.00%
Company [Member]
Actual Amount [Abstract]
Total capital (to risk-weighted assets)	106,891,000	100,320,000
Tier 1 capital (to risk-weighted assets)	99,692,000	92,902,000
Tier 1 capital (to average assets)	99,692,000	92,902,000
Actual Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	18.55%	17.75%
Tier 1 capital (to risk-weighted assets) (in hundredths)	17.30%	16.44%
Tier 1 capital (to average assets) (in hundredths)	10.99%	10.42%
For Capital Adequacy Purposes Amount [Abstract]
Total capital (to risk-weighted assets)	46,105,000	45,211,000
Tier 1 capital (to risk-weighted assets)	23,053,000	22,606,000
Tier 1 capital (to average assets)	36,272,000	35,669,000
For Capital Adequacy Purposes Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	8.00%	8.00%
Tier 1 capital (to risk-weighted assets) (in hundredths)	4.00%	4.00%
Tier 1 capital (to average assets) (in hundredths)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount [Abstract]
Total capital (to risk-weighted assets)	57,631,000	56,514,000
Tier 1 capital (to risk-weighted assets)	34,579,000	33,908,000
Tier 1 capital (to average assets)	$ 45,341,000	$ 44,587,000
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%	10.00%
Tier 1 capital (to risk-weighted assets) (in hundredths)	6.00%	6.00%
Tier 1 capital (to average assets) (in hundredths)	5.00%	5.00%

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The number of preceding years retained net income used for determining the restrictions on dividend declarations.

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Lending limit due to regulatory regulations.

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The minimum tier one leverage capital to average assets for the entity to be considered well capitalized.

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The minimum total risk-based capital to average assets for the entity to be considered well capitalized.

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Amount of dividends that can be declared or paid without approval of regulatory agency.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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