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v2.4.1.9

Loan Receivable and Allowance for Loan and Lease Losses Credit Risk Profile Internal Grade (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Mar. 31, 2014
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Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 435,534us-gaap_LoansReceivableNet | $ 389,956us-gaap_LoansReceivableNet
Multifamily Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 64,138us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember | 47,525us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember
Multifamily Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 62,648us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 46,028us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Multifamily Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Multifamily Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 1,490us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 1,497us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Multifamily Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Multifamily Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_MultifamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 200,334us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 198,101us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 193,905us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 184,850us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 2,519us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 7,129us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 3,910us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 6,122us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Commercial Real Estate [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
Construction Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,074us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember | 5,070us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember
Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,074us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 5,070us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Construction Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Construction Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Construction Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Construction Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 38,244us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember | 26,931us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember
Business [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 31,908us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 20,638us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 889us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 1,295us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,447us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 4,998us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Business [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember | 0us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
One- to four family loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 127,417us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember | 112,191us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember
One- to four family loans [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 123,280us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember | 109,890us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
One- to four family loans [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 4,137us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember | 2,301us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = carv_OneToFourFamilyLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 327us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember | 138us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember
Consumer Loan [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 313us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember | 137us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember
Consumer Loan [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 14us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember | $ 1us-gaap_LoansReceivableNet / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_ConsumerLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember

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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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