XML 22 R31.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans (Details 5) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due $ 327us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue $ 283us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
Recorded investments, 60 - 89 Days Past Due 72us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue 161us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
Recorded investments, 90 Days or Greater Days Past Due 531us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue 1,706us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Recorded investments, Total Past Due 930us-gaap_FinancingReceivableRecordedInvestmentPastDue 2,150us-gaap_FinancingReceivableRecordedInvestmentPastDue
Recorded investments, Loans Not Past Due 230,794cbkm_FinancingReceivableRecordedInvestmentNotPastDue 223,307cbkm_FinancingReceivableRecordedInvestmentNotPastDue
Recorded investments, Total 231,724us-gaap_FinancingReceivableRecordedInvestmentCurrent 225,457us-gaap_FinancingReceivableRecordedInvestmentCurrent
Commercial Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 89us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
66us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Recorded investments, 60 - 89 Days Past Due 7us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Recorded investments, 90 Days or Greater Days Past Due 20us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Recorded investments, Total Past Due 116us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
66us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Recorded investments, Loans Not Past Due 33,528cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
33,789cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Recorded investments, Total 33,644us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
33,855us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Commercial Real Estate Construction [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Recorded investments, 60 - 89 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Recorded investments, 90 Days or Greater Days Past Due 0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Recorded investments, Total Past Due 0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Recorded investments, Loans Not Past Due 7,469cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
3,679cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Recorded investments, Total 7,469us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
3,679us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_CommercialRealEstateConstructionMember
Other Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Recorded investments, 60 - 89 Days Past Due 65us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Recorded investments, 90 Days or Greater Days Past Due 79us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
1,625us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Recorded investments, Total Past Due 144us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
1,625us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Recorded investments, Loans Not Past Due 137,672cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
129,860cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Recorded investments, Total 137,816us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
131,485us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_OtherCommercialRealEstateMember
Residential Real Estate Owner Occupied [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 238us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
111us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Recorded investments, 60 - 89 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
122us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Recorded investments, 90 Days or Greater Days Past Due 432us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
81us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Recorded investments, Total Past Due 670us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
314us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Recorded investments, Loans Not Past Due 28,605cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
30,817cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Recorded investments, Total 29,275us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
31,131us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateOwnerOccupiedMember
Residential Real Estate Non Owner Occupied [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Recorded investments, 60 - 89 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
39us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Recorded investments, 90 Days or Greater Days Past Due 0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Recorded investments, Total Past Due 0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
39us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Recorded investments, Loans Not Past Due 14,865cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
16,462cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Recorded investments, Total 14,865us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
16,501us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateNonOwnerOccupiedMember
Residential Real Estate Construction [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Recorded investments, 60 - 89 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Recorded investments, 90 Days or Greater Days Past Due 0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Recorded investments, Total Past Due 0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Recorded investments, Loans Not Past Due 1,225cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
185cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Recorded investments, Total 1,225us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
185us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= cbkm_ResidentialRealEstateConstructionMember
Consumer Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded investments, 30 - 59 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
106us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recorded investments, 60 - 89 Days Past Due 0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recorded investments, 90 Days or Greater Days Past Due 0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recorded investments, Total Past Due 0us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
106us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recorded investments, Loans Not Past Due 7,430cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
8,515cbkm_FinancingReceivableRecordedInvestmentNotPastDue
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recorded investments, Total $ 7,430us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
$ 8,621us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember