XML 19 R15.htm IDEA: XBRL DOCUMENT v2.3.0.11

Document Information	3 Months Ended
Document Information	Apr. 30, 2011
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2011

X

- Definition

If the value is true, then the document as an amendment to previously-filed/accepted document.

+ Details

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Namespace Prefix:	dei
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements this will be the filing date. The format of the date is CCYY-MM-DD.

+ Details

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Namespace Prefix:	dei
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type should be limited to the same value as the supporting SEC submission type. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, NCSR, N-Q, and Other.

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Namespace Prefix:	dei
Data Type:	us-types:SECReportItemType
Balance Type:	na
Period Type:	duration