Borrowed Funds (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
2013	$ 0
2014	0
2015	0
2016	0
2017	20,000
Thereafter	0
Borrowed Funds Maturities	$ 20,000

Amount of borrowed funds maturing as of the balance sheet date.

No definition available.

Name:	emcf_BorrowedFundsMaturities
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing in the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearFive
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing in the fourth fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearFour
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing in the next fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearOne
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing after the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearThereafter
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing in the third fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearThree
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of borrowed funds maturing in the second fiscal year following the latest fiscal year.

No definition available.

Name:	emcf_BorrowedFundsMaturitiesYearTwo
Namespace Prefix:	emcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant