Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable and Concentration of Credit Risk (Narrative) (Details)

v3.22.1
Accounts Receivable and Concentration of Credit Risk (Narrative) (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
customer
Mar. 31, 2021
customer
Mar. 31, 2022
USD ($)
customer
Mar. 31, 2021
USD ($)
customer
Sep. 30, 2021
customer
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Change in allowance for doubtful accounts | $     $ 0 $ 0  
Minimum [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Credit terms     30 days    
Maximum [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Credit terms     120 days    
Current Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Number of customers     0   0
Accounts Receivable And Long-Term Trade Receivables [Member] | Customer Concentration Risk [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Number of customers     3    
Accounts Receivable And Long-Term Trade Receivables [Member] | Customer Concentration Risk [Member] | Three Customers [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk, percentage     83.00%    
Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Number of customers         3
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk, percentage         90.00%
Total Revenue [Member] | Customer Concentration Risk [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Number of customers 2 2 2    
Total Revenue [Member] | Customer Concentration Risk [Member] | Three Customers [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk, percentage   77.00%      
Total Revenue [Member] | Customer Concentration Risk [Member] | Two Customers [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk, percentage 83.00%   81.00% 69.00%  
Number of customers       2  
Brazil [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Credit terms     90 days    
Long term trade receivable | $ $ 1,400,000   $ 1,400,000