Federal Home Loan Bank Stock (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Federal Home Loan Bank Stock [Abstract]
Federal home loan bank stock	$ 1,353,000us-gaap_FederalHomeLoanBankStock	$ 1,761,000us-gaap_FederalHomeLoanBankStock
FHLB Stock, at par value (in dollars per share)	$ 100czfs_FederalHomeLoanBankStockParValue

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 325

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6478792&loc=d3e63345-112809

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