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Note 1 - Nature of Operations (Details) - Summary of Company's Product Classes
 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Segment Reporting Information [Line Items]      
Product classes 100.00%hicka_PrincipalProductClassPercentage 100.00%hicka_PrincipalProductClassPercentage 100.00%hicka_PrincipalProductClassPercentage
Automotive Test Equipment [Member]      
Segment Reporting Information [Line Items]      
Product classes 76.30%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_AutomotiveTestEquipmentMember		 74.40%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_AutomotiveTestEquipmentMember		 66.10%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_AutomotiveTestEquipmentMember
Indicating Instruments [Member]      
Segment Reporting Information [Line Items]      
Product classes 23.70%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_IndicatingInstrmentsMember		 25.60%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_IndicatingInstrmentsMember		 33.90%hicka_PrincipalProductClassPercentage
/ us-gaap_ProductOrServiceAxis
= hicka_IndicatingInstrmentsMember