XML 14 R6.htm IDEA: XBRL DOCUMENT v2.4.0.8
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Entity Registrant Name dei_EntityRegistrantName THOMPSON IM FUNDS INC
Entity Central Index Key dei_EntityCentralIndexKey 0000795264
Document Creation Date dei_DocumentCreationDate Jan. 23, 2014
Document Effective Date dei_DocumentEffectiveDate Jan. 23, 2014
Prospectus Date rr_ProspectusDate Jan. 23, 2014