Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

v3.21.2
Income Taxes (Narrative) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Apr. 01, 2023
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2020
Income Tax Expense (Benefit) [Line Items]            
Corporate income tax rate       21.00%    
Income tax benefit   $ 2,873,063 $ (240,502) $ 2,773,071 $ (30,619)  
Tax Rate, Income tax benefit at U.S. federal statutory rates       21.00%    
United Kingdom [Member]            
Income Tax Expense (Benefit) [Line Items]            
Corporate income tax rate       19.00%    
Tax Rate, Income tax benefit at U.S. federal statutory rates       19.00%    
Scenario, Forecast [Member] | United Kingdom [Member]            
Income Tax Expense (Benefit) [Line Items]            
Corporate income tax rate 25.00%          
Tax Rate, Income tax benefit at U.S. federal statutory rates 25.00%          
Minimum [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards, expiration date       Dec. 31, 2022    
Maximum [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards, expiration date       Dec. 31, 2040    
Domestic [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           $ 42,000,000.0
Domestic [Member] | 2022 to 2040 [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           13,800,000
Domestic [Member] | Indefinite [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           28,200,000
Domestic [Member] | Expiring 2040 [Member]            
Income Tax Expense (Benefit) [Line Items]            
Tax credit carryforward           900,000
State [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           25,600,000
State [Member] | 2022 to 2040 [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           19,800,000
State [Member] | Indefinite [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           5,800,000
Foreign [Member] | Indefinite [Member]            
Income Tax Expense (Benefit) [Line Items]            
Operating loss carryforwards           $ 61,300,000
U.K. [Member] | Enacted U.K. Tax Rate Increase [Member]            
Income Tax Expense (Benefit) [Line Items]            
Change in valuation allowance   800,000   $ 800,000    
Increase in deferred tax assets   3,700,000   3,700,000    
Income tax benefit   $ 3,000,000.0   $ 3,000,000.0