Employee Benefit Plans (Details 4)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Percentage of Plan Assets	100.00%	100.00%
Weighted-Average Expected Long-Term Rate of Return	7.75%	7.75%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	45.00%
Percentage of Plan Assets	44.00%	39.00%
Weighted-Average Expected Long-Term Rate of Return	4.47%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	45.00%
Percentage of Plan Assets	48.00%	53.00%
Weighted-Average Expected Long-Term Rate of Return	3.25%
Money markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	10.00%
Percentage of Plan Assets	8.00%	8.00%
Weighted-Average Expected Long-Term Rate of Return	0.03%

This element represents the fair value of plan assets percentage.

No definition available.

Name:	emcf_DefinedBenefitPlanPlanAssetsAtFairValuePercentage
Namespace Prefix:	emcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Details

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