Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.21.2
Income Taxes - Narrative (Details) - USD ($)
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Investments Owned Federal Income Tax Note [Line Items]      
Refund due $ 580,314    
Effective income tax rate reconciliation, at federal statutory income tax rate, percent 21.00% 21.00% 21.00%
Federal Tax [Member]      
Investments Owned Federal Income Tax Note [Line Items]      
Unrecognized tax benefits, Increase resulting from prior period tax positions   $ 2,390,415