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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Entity Registrant Name dei_EntityRegistrantName HEARTLAND GROUP INC
Entity Central Index Key dei_EntityCentralIndexKey 0000809586
Document Creation Date dei_DocumentCreationDate Jul. 18, 2013
Document Effective Date dei_DocumentEffectiveDate Jul. 19, 2013
Prospectus Date rr_ProspectusDate Jul. 19, 2013