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BASIS OF PRESENTATION AND SUMMARY OF ACCOUNTING POLICIES - Summary of opening and closing balances of the Company's contract balances (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2022
Mar. 31, 2022
Oct. 01, 2021
Schedule Of Contract Balances [Line Items]      
Change in contract liabilities   $ 112,656  
Revenue recognized in contract liabilities $ 3,615 17,397  
Contract liabilities      
Schedule Of Contract Balances [Line Items]      
Deferred revenue $ 393,656 $ 393,656 $ 281,000