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Intangibles - Schedule of Intangibles (Details) - USD ($)
12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]    
Accumulated Amortization $ 3,536,000 $ 2,685,000
Carrying Value 4,020,000  
Cost, total 8,266,000 7,528,000
Carrying value, total 4,730,000 4,843,000
Gilman brand name    
Indefinite-lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets 710,000 710,000
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Cost 7,511,000 6,818,000
Accumulated Amortization 3,525,000 2,685,000
Carrying Value $ 3,986,000 $ 4,133,000
Customer relationships | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (years) 3 years 3 years
Customer relationships | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (years) 10 years 10 years
Software license    
Finite-Lived Intangible Assets [Line Items]    
Cost $ 45,000  
Accumulated Amortization 11,000  
Carrying Value $ 34,000  
Estimated Useful Life (years) 3 years