Equity (Detail) |
6 Months Ended | |
|---|---|---|
|
Mar. 31, 2020
shares
|
Sep. 30, 2019
shares
|
|
| Class A Common Stock | ||
| Schedule Of Stockholders Equity [Line Items] | ||
| Conversion rate | 1 | |
| Common stock, shares outstanding (in shares) | 32,705,418 | 32,597,736 |
| Class B Common Stock | ||
| Schedule Of Stockholders Equity [Line Items] | ||
| Conversion of Class B common stock to Class A common stock (in shares) | 107,682 | |
| Common stock, shares outstanding (in shares) | 19,076,327 | 19,184,009 |
| X | ||||||||||
- Definition Conversion Of Common Stock In Connection With Initial Public Offering No definition available.
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| X | ||||||||||
- Definition Conversion Rate to Reclassify Common Stock to Class B Shares No definition available.
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| X | ||||||||||
- Definition Schedule Of Stockholders Equity [Line Items] No definition available.
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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- Details
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