Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Narrative) (Details)

v3.20.2
Employee Benefit Plans (Narrative) (Details) - USD ($)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
401(k) [Member]    
Defined Contribution Plan [Line Items]    
Company matching contribution rate 100.00%  
Company matching contribution, percent of compensation 4.00%  
Company contributions $ 119,000 $ 121,000
Foreign Postretirement Benefit Plan [Member]    
Defined Contribution Plan [Line Items]    
Company matching contribution, percent of compensation 3.00%  
Company contributions $ 33,000 $ 29,000