Basis of Presentation and Significant Accounting Policies - Concentrations of Credit Risk - Additional Information (Details)	9 Months Ended	12 Months Ended
Jun. 30, 2022	Sep. 30, 2021
US Treasuries and FDIC Insured
Concentration Risk [Line Items]
Percentage of cash balances	85.00%	83.00%
Accounts Receivable \| Customer Concentration Risk \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	14.00%
Accounts Receivable \| Customer Concentration Risk \| Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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