| Acquisitions - Summary of purchase price allocation of Better Backers to the acquired identifiable assets (Details) - Better Backers $ in Thousands | 6 Months Ended | 
|---|---|
| Mar. 31, 2023  USD ($) | |
| Business Combination Segment Allocation [Line Items] | |
| Total purchase price | $ 3,166 | 
| Inventory | 748 | 
| Property, plant and equipment | 2,118 | 
| Intangible assets | 300 | 
| Total assets acquired | $ 3,166 | 
| X | ||||||||||
| 
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount of assets acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition The amount of inventory recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
 | 
| X | ||||||||||
| 
- Details 
 |