Annual report pursuant to Section 13 and 15(d)

Employee Benefits Plans - Summary of Rollforward of the MSP Benefit Obligation (Details)

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Employee Benefits Plans - Summary of Rollforward of the MSP Benefit Obligation (Details) - USD ($)
1 Months Ended 12 Months Ended
Aug. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Change in projected benefit obligation:        
Benefit obligation at beginning of year   $ 5,226,000 $ 4,397,000  
Interest cost   195,000 171,000 $ 293,000
Benefits paid   (258,000) (340,000)  
MSP termination adjustments     985,000  
MSP termination benefits payment $ (5,175,000) (5,175,000)    
Recognized actuarial gain adjustment   $ 12,000 13,000 16,000
Benefit obligation at end of year     5,226,000 $ 4,397,000
Funded status at end of year     $ (5,226,000)