2.2.0.25 true Sheet 010000 - Document - Risk/Return Summary {Unlabeled} Risk/Return Summary http://xbrl.sec.gov/rr/role/RiskReturn true R1.xml false Sheet 040000 - Disclosure - Risk/Return Detail Data {Elements} Risk/Return Detail Data http://xbrl.sec.gov/rr/role/RiskReturnDetailData false R6.xml false Book All Reports All Reports false 1 3 2 0 2 65 false false eol_0000846421-11-000005_STD_369_20110228_0 8 eol_0000846421-11-000005_STD_369_20110228_0_396770x-9998659 30 eol_0000846421-11-000005_STD_369_20110228_0_396770x-9998659_429423x-9998660 27 true true