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Business Description - Narrative (Details) - 12 months ended Sep. 30, 2020
technician in Thousands
campus
technician
plan
location
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Number of campuses through which undergraduate degree, diploma and certificate programs are offered 12     12
Duration of technical education provided 55 years      
Number of graduated technicians | technician   220    
Number of manufacturer brand partners and employers | plan     35