Variable Interest Entities	3 Months Ended
Variable Interest Entities	Jun. 30, 2011
VARIABLE INTEREST ENTITIES [Abstract]
Schedule of Variable Interest Entities [Table Text Block]	VARIABLE INTEREST ENTITIES The Holding Company's subsidiary, Carver Statutory Trust I, is not consolidated with Carver Bancorp Inc. for financial reporting purposes. Carver Statutory Trust I was formed in 2003 for the purpose of issuing $13.0 million aggregate liquidation amount of floating rate Capital Securities due September 17, 2033 (“Capital Securities”) and $0.4 million of common securities (which are the only voting securities of Carver Statutory Trust I), which are 100% owned by Carver Bancorp Inc., and using the proceeds to acquire Junior Subordinated Debentures issued by Carver Bancorp Inc. Carver Bancorp Inc. has fully and unconditionally guaranteed the Capital Securities along with all obligations of Carver Statutory Trust I under the trust agreement relating to the Capital Securities. The Bank's subsidiary, Carver Community Development Corporation (“CCDC”), was formed to facilitate its participation in local economic development and other community-based activities. Per the NMTC Award's Allocation Agreement between the CDFI Fund and CCDC, CCDC is permitted to form and sub-allocate credits to subsidiary Community Development Entities (“CDEs”) to facilitate investments in separate development projects. The Bank was originally awarded $59.0 million of NMTC. In fiscal 2008, the Bank transferred rights to an investor in a NMTC project totaling $19.2 million, of which $19.0 million was a qualified equity investment, and recognized a gain on the transfer of rights of $1.7 million. The Bank was required to maintain a 0.01% interest in the entity with the investor owning the remaining 99.99%. The entity was called CDE-10. For financial reporting purposes, the $19.2 million transfer of rights to an investor in a NMTC project was reflected in the other assets and the minority interest sections of the balance sheet as the entity to which the rights were transferred was required to be consolidated under the then existing accounting guidance based on an evaluation of certain contractual arrangements between the Bank and the investor. In fiscal 2009, following certain amendments to the agreement between CCDC and the investor that resulted in a reconsideration event, the Bank deconsolidated the entity for financial statement reporting purposes. However, under the current arrangement, the Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NTMC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $7.4 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. With respect to the remaining $40 million of the original NMTC award, the Bank has established various special purpose entities through which its investments in NMTC eligible activities are conducted. As the Bank is exposed to all of the expected losses and residual returns from these investments the Bank is deemed the primary beneficiary. Accordingly, all of these special purpose entities were consolidated in the Bank's Statement of Financial Condition as of June 30, 2011 and 2010 resulting in the consolidation of assets of approximately $39 million and $40 million, respectively. During December 2010 Carver transferred its equity ownership in the CDEs and the associated rights to an investor in exchange for $6.7 million in cash. Since Carver continues to be exposed to the majority of the variability associated with the entities, management has determined that Carver continues to be the primary beneficiary of the entities. As a result, the CDEs have been consolidated and the investor's equity investment of $6.7 million has been reflected as non-controlling interest in the Statement of Financial Condition. The sale of the equity interest in the CDEs provides the investor with rights to the new market tax credit on a prospective basis. A portion of non-controlling interest is transferred to the controlling interest as the investor earns the tax credits. Under the current arrangement, the Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NMTC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $7.8 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidelines related to accounting for contingencies. In May 2009, the Bank received an additional NMTC award in the amount of $65 million. In December 2009, the Bank transferred rights to an investor in a NMTC project totaling $10.5 million of the second NMTC award and recognized a gain on the transfer of rights of $0.5 million. The Bank was required to maintain a 0.01% interest in the entity with the investor owning the remaining 99.99%. The entity was called CDE-13. This entity has been reviewed for possible consolidation under the accounting guidance related to variable interest entities and found to not be a consolidating entity for financial statement reporting purposes. The Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NTMC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $4.1 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. In March 2010, the Bank transferred rights to investors in NMTC projects totaling $20.5 million and recognized a gain on the transfer of rights of $0.5 million. The Bank received additional income of $0.4 million when the project closings were finalized in March 2011. The Bank was required to maintain a 0.01% interest in each of the newly created entities with the investor owning the remaining 99.99%. The entities were called CDE-15, CDE-16 and CDE-17. These entities have been reviewed for possible consolidation under the accounting guidance related to variable interest entities and found to not be consolidating entities for financial statement reporting purposes as Carver does not have the power to direct the activities that most significantly impact its economic performance. The Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NMTC projects not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $8.0 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. In June 2010, the Bank transferred rights to an investor in a NMTC project totaling $10.0 million of the second NMTC award and recognized a gain on the transfer of rights of $0.4 million. The Bank was required to maintain a 0.01% interest in the entity with the investor owning the remaining 99.99%. The entity was called CDE-14. This entity has been reviewed for possible consolidation under the accounting guidance related to variable interest entities and found to not be a consolidating entity for financial statement reporting purposes as Carver does not have the power to direct the activities that most significantly impact its economic performance. The Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NMTC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $3.9 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. In June 2010, the Bank transferred rights to an investor in a NMTC project totaling $8.7 million and recognized a gain on the transfer of rights of $0.4 million. The Bank was required to maintain a 0.01% interest in the entity with the investor owning the remaining 99.99%. The entity was called CDE-18. In December 2010, the Bank transferred the remaining $4.6 million rights to an investor in the same NMTC project and recognized a gain of $0.2 million. This entity has been reviewed for possible consolidation under the accounting guidance related to variable interest entities and found to not be a consolidating entity for financial statement reporting purposes as Carver does not have the power to direct the activities that most significantly impact its economic performance. The Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NMTC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $5.2 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. In August 2010, the Bank transferred rights to an investor in a NMTC project totaling $6.6 million and recognized a gain on the transfer of rights of $0.3 million. The Bank was required to maintain a 0.01% interest in the entity with the investor owning the remaining 99.99%. The entity was called CDE-19. In December 2010, the Bank transferred the remaining $4.1 million rights to an investor in the same NMTC project and recognized an additional gain of $0.2 million. This entity has been reviewed for possible consolidation under the accounting guidance related to variable interest entities and found to not be a consolidating entity for financial statement reporting purposes as Carver does not have the power to direct the activities that most significantly impact its economic performance. The Bank has a contingent obligation to reimburse the investor for any loss or shortfall incurred as a result of the NMTC project not being in compliance with certain regulations that would void the investor's ability to otherwise utilize tax credits stemming from the award. The maximum possible loss to Carver from such an arrangement is approximately $4.2 million. At June 30, 2011, Carver has not recorded any liability with respect to this obligation in accordance with accounting guidance related to accounting for contingencies. In February 2011, the Bank announced that it had been selected to receive a third NMTC award in the amount of $25 million.

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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