An additional amount held in risk-based capital designed to ensure that banks build up capital buffers outside periods of stress which can be drawn down as losses are incurred. The requirement is based on simple capital conservation rules designed to avoid breaches of minimum capital requirements.

No definition available.

Name:	emcf_CapitalConservationBuffer
Namespace Prefix:	emcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Note 9 - Regulatory Matters (Details Textual)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Capital Conservation Buffer			1.25%	0.625%	0.00%
Scenario, Forecast [Member]
Capital Conservation Buffer	2.50%	1.875%