Stock Compensation Plans (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Nonvested, Options (in shares)	2,750
Granted, Options (in shares)	0
Vested, Options (in shares)	0
Forfeited, Options (in shares)	0
Nonvested, Options (in shares)	2,750
Nonvested, Weighted-Average Grant-date Fair Value	$ 2.43
Granted, Weighted-Average Grant-date Fair Value	$ 0
Vested, Weighted-Average Grant-date Fair Value	$ 0
Forfeited, Weighted-Average Grant-date Fair Value	$ 0
Nonvested, Weighted-Average Grant-date Fair Value	$ 2.43

The number of options, that were forfeited during the reporting period.

No definition available.

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriod
Namespace Prefix:	emcf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value as of the grant date of option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

+ References

No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	emcf_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of options, that vested during the reporting period.

+ References

No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantInPeriod
Namespace Prefix:	emcf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested options issued during the period.

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No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	emcf_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of non-vested equity-based payment options, that validly exist and are outstanding as of the balance sheet date.

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No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedNumber
Namespace Prefix:	emcf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted average fair value of nonvested option plans.

+ References

No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	emcf_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of options, that vested during the reporting period.

+ References

No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod
Namespace Prefix:	emcf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value as of grant date pertaining to an option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

No definition available.

+ Details

Name:	emcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	emcf_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration