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4. Investment Securities (Details Narrative)
Mar. 31, 2015
integer
Dec. 31, 2014
integer
Mar. 31, 2014
integer
U.S. GSE debt securities      
Number of securities 1CMTV_NumberOfSecurities
/ us-gaap_InformationByCategoryOfDebtSecurityAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		 10CMTV_NumberOfSecurities
/ us-gaap_InformationByCategoryOfDebtSecurityAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		 13CMTV_NumberOfSecurities
/ us-gaap_InformationByCategoryOfDebtSecurityAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
U.S. Government securities      
Number of securities     2CMTV_NumberOfSecurities
/ us-gaap_InformationByCategoryOfDebtSecurityAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Mortgage Backed Securities      
Number of securities   4CMTV_NumberOfSecurities
/ us-gaap_InformationByCategoryOfDebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesMember