Basis of Presentation and Significant Accounting Policies - Concentrations of Credit Risk - Additional Information (Details)	3 Months Ended	12 Months Ended
Dec. 31, 2021	Sep. 30, 2021
US Treasuries and FDIC Insured
Concentration Risk [Line Items]
Percentage of cash balances	84.00%	83.00%
Accounts Receivable \| Customer Concentration Risk \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	23.00%	14.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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