Stockholders' Equity (Tables)  | 
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2019  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of stock options using valuation assumptions | 
 The expected term of options granted is derived from the output of the option valuation model and represents the period of time that options granted are expected to be outstanding; the range given below results from different time-frames for the various market conditions being met. 
2019 Modified Option Grant 
 
The weighted-average grant-date fair value of the 2019 Modified Option Grant was $1.40.
 
2019 Option Grants 
 2018 Option Grants 
 2016 Option Grants 
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| Schedule of treasury stock purchases and issuances | 
 
The following table illustrates the Company’s treasury stock activity for the six months ended March 31, 2019:
 
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