XML 20 R37.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Loan Receivable and Allowance for Loan and Lease Losses Credit Risk Profile Internal Grade (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Mar. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 562,771 | $ 483,193
Multifamily Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 109,287 | 94,706
Multifamily Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 108,046 | 93,218
Multifamily Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Multifamily Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 1,241 | 1,488
Multifamily Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Multifamily Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 242,707 | 185,851
Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 233,495 | 181,340
Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 2,197 | 1,890
Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 7,015 | 2,621
Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Commercial Real Estate [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,067 | 5,076
Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,067 | 5,076
Construction Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 76,766 | 70,599
Business [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 68,557 | 62,419
Business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 1,551 | 1,065
Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 6,658 | 7,115
Business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Business [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
One- to four family loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 128,855 | 126,527
One- to four family loans [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 125,506 | 122,689
One- to four family loans [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 3,349 | 3,838
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 89 | 434
Consumer Loan [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 89 | 434
Consumer Loan [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 0 | $ 0

X
- 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
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 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
Name: | us-gaap_LoansReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=carv_MultifamilyLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=carv_OneToFourFamilyLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |