Annual report pursuant to Section 13 and 15(d)

Revolving Line of Credit (Narrative) (Details)

v3.8.0.1
Revolving Line of Credit (Narrative) (Details)
12 Months Ended
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 29, 2015
USD ($)
Line of Credit Facility [Line Items]      
Line of credit facility, maximum borrowing capacity     $ 10,000,000
Ratio of total liabilities to total stockholders equity 65    
Commitment fee 0.10%    
Line of credit facility, expiration date Dec. 29, 2017    
Line of credit facility, amount outstanding $ 0 $ 0  
London Interbank Offered Rate (LIBOR) [Member]      
Line of Credit Facility [Line Items]      
Debt instrument, basis spread on variable rate 2.25%