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Note 10 - Commitments and Contingent Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Commitment to Extend Credit	$ 50.7

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	chfn_CommitmentToExtendCredit
Namespace Prefix:	chfn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant