XML 9 R4.htm IDEA: XBRL DOCUMENT v2.3.0.15

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	Jan. 31, 2011

The date of the prospectus.

Reference 1: 1

-Publisher SEC

-Name Form

-Number N-1A

-Chapter A

-Section 1

-Paragraph 3

-Subsection a

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Data Type:	xbrli:dateItemType
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Period Type:	duration

Name:	rr_RiskReturnAbstract
Namespace Prefix:	rr
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