XML 185 R12.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Accrued Interest Receivable (Notes) | 12 Months Ended
--- | ---
Mar. 31, 2013
Accrued Interest Receivables [Abstract] |
Accrued Interest Receivable [Text Block] | ACCRUED INTEREST RECEIVABLE The detail of accrued interest receivable as of March 31 is as follows:
$ in thousands | 2013 |  | 2012
Loans receivable | $ | 1,721 |  |  | $ | 1,912 |
Mortgage-backed securities | 156 |  |  | 173 |
Investments and other interest bearing assets | 370 |  |  | 171 |
Total accrued interest receivable | $ | 2,247 |  |  | $ | 2,256 |

X
- Details
Name: | carv_AccruedInterestReceivablesAbstract
Namespace Prefix: | carv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Accrued Interest Receivable [Text Block] + References No definition available. + Details
Name: | carv_AccruedInterestReceivableTextBlock
Namespace Prefix: | carv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration