XML 55 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Loan Receivable and Allowance for Loan and Lease Losses Text Figures (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Mar. 31, 2013 | Jun. 30, 2013 | Sep. 30, 2013 Business [Member] | Sep. 30, 2013 One- to four family loans [Member] | Sep. 30, 2012 One- to four family loans [Member] | Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member] | Mar. 31, 2013 Fair Value, Inputs, Level 2 [Member] | Mar. 31, 2012 Fair Value, Inputs, Level 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Decrease in non-accrual loans |  |  | $ (12,500,000) |  |  |  |  |  |  |  |  |
Percentage decrease in non-accrual loans |  |  | (40.70%) |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | 0 |  | 0 |  |  | 2 | 1 | 1 |  |  |  |
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest | 18,140,000 |  | 18,140,000 |  | 30,626,000 |  |  |  |  |  |  |
Number of non performing loans moved to held for sale | 13 |  |  |  |  |  |  |  |  |  |  |
Non performing loans moved to held for sale |  |  | 7,100,000 |  |  |  |  |  |  |  |  |
Amount of TDR loans upgraded to performing | 10 |  | 10 |  |  |  |  |  |  |  |  |
TDR loan upgraded to performing | 6,400,000 |  | 6,400,000 |  |  |  |  |  |  |  |  |
Number of non performing multi family loans that paid off |  |  | 1 |  |  |  |  |  |  |  |  |
Non performing loan multi family that paid off |  |  | 1,100,000 |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due | 9,957,000 |  | 9,957,000 |  | 9,072,000 |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment | 4,600,000 |  | 4,600,000 |  | 16,700,000 |  |  |  |  |  |  |
impaired loans | 3,600,000 |  | 3,600,000 |  | 4,900,000 |  |  |  |  |  |  |
Other non-performing asset | 8,800,000 |  |  |  |  |  |  |  |  |  |  |
Other Real Estate, Foreclosed Assets, and Repossessed Assets | 970,000 |  | 970,000 |  | 2,386,000 |  |  |  |  | 970,000 | 2,386,000 |
Number of Real Estate Properties | 10 |  | 10 |  | 9 |  |  |  |  |  |  |
Number of loans modified with interest rate concession of 2% |  |  | 1 |  |  |  |  |  |  |  |  |
Loans Rate Concession of 2% |  |  | 2.00% |  |  |  |  |  |  |  |  |
Number of loans modified, extended maturity |  |  | 1 |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Post-Modification Recorded Investment |  |  |  |  |  | 1,268,000 | 719,000 | 549,000 | 500,000 |  |  |
Loans modified int. rate concession of 1.25% |  |  |  | 0.0125 |  |  |  |  |  |  |  |
Number of Modified Loan Subsequently Defaulted |  |  | 0 | 1 |  |  |  |  |  |  |  |
Modified Loan Subsequently Defaulted |  | 2,400,000 |  | 2,400,000 |  |  |  |  |  |  |  |
Number of loans modified with interest rate concessions |  | 0 |  | 1 |  |  |  |  |  |  |  |
Loans in TDR performing modified terms |  |  | 18 |  | 9 |  |  |  |  |  |  |
TDR Loans on Accrual Status | 10,900,000 |  | 10,900,000 |  | 5,000,000 |  |  |  |  |  |  |
Loans Held-for-sale (HFS) | $ 7,854,000 |  | $ 7,854,000 |  | $ 13,107,000 |  |  |  |  | $ 7,854,000 | $ 13,107,000 | $ 13,107,000
number of loans to related parties | 0 |  | 0 |  |  |  |  |  |  |  |  |

X
- Definition Amount of TDR loans upgraded to performing + References No definition available. + Details
Name: | carv_AmountOfTdrLoansUpgradedToPerforming
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Decrease in non-accrual loans + References No definition available. + Details
Name: | carv_Decreaseinnonaccrualloans
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition impaired loans + References No definition available. + Details
Name: | carv_ImpairedLoans
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans in TDR performing modified terms + References No definition available. + Details
Name: | carv_LoansInTdrPerformingModifiedTerms
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans modified int. rate concession of 1.25% + References No definition available. + Details
Name: | carv_LoansModifiedIntRateConcessionOf125
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loans Rate Concession of 2% + References No definition available. + Details
Name: | carv_LoansRateConcessionof2
Namespace Prefix: | carv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Modified Loan Subsequently Defaulted + References No definition available. + Details
Name: | carv_ModifiedLoanSubsequentlyDefaulted
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Non performing loan multi family that paid off + References No definition available. + Details
Name: | carv_Nonperformingloanmultifamilythatpaidoff
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Non performing loans moved to held for sale + References No definition available. + Details
Name: | carv_Nonperformingloansmovedtoheldforsale
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of loans modified, extended maturity + References No definition available. + Details
Name: | carv_Numberofloansmodifiedextendedmaturity
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of loans modified with interest rate concession of 2% + References No definition available. + Details
Name: | carv_Numberofloansmodifiedwithinterestrateconcessionof2
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of loans modified with interest rate concessions + References No definition available. + Details
Name: | carv_Numberofloansmodifiedwithinterestrateconcessions
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition number of loans to related parties + References No definition available. + Details
Name: | carv_Numberofloanstorelatedparties
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Modified Loan Subsequently Defaulted + References No definition available. + Details
Name: | carv_NumberOfModifiedLoanSubsequentlyDefaulted
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non performing loans moved to held for sale + References No definition available. + Details
Name: | carv_Numberofnonperformingloansmovedtoheldforsale
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non performing multi family loans that paid off + References No definition available. + Details
Name: | carv_Numberofnonperformingmultifamilyloansthatpaidoff
Namespace Prefix: | carv_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other non-performing asset + References No definition available. + Details
Name: | carv_OtherNonPerformingAsset
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage decrease in non-accrual loans + References No definition available. + Details
Name: | carv_Percentagedecreaseinnonaccrualloans
Namespace Prefix: | carv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition TDR Loans on Accrual Status + References No definition available. + Details
Name: | carv_TdrLoansOnAccrualStatus
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition TDR loan upgraded to performing + References No definition available. + Details
Name: | carv_TdrLoanUpgradedToPerforming
Namespace Prefix: | carv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investment in financing receivables (after modification) modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loans held-for-sale as presented on the statement of financial position which may include mortgage loans held-for-sale, finance receivables held-for-sale, or any other loans classified as held-for-sale which are due the Company as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + 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 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 2, 3, 4 -IssueDate 2006-05-01 -Chapter 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OtherRealEstateAndForeclosedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant