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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2015 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Product Information [Line Items] |  |  |  |  |  |
Accrued promotional allowance |  | $ 136,557 |  | $ 136,557 |  | $ 35,977
Increase in net income |  | $ 83,949 | $ (181,896) | $ 176,685 | $ (166,059) |
Basic (in USD per share) |  | $ 0.92 | $ (2.46) | $ 1.86 | $ (2.26) |
Diluted (in USD per share) |  | $ 0.89 | $ (2.46) | $ 1.81 | $ (2.26) |
Amount excess of FDIC limit |  | $ 759,500 |  | $ 759,500 |  | 652,400
Restricted cash |  | 0 |  | 0 |  | 38,768
Inventory valuation reserves |  | 3,900 |  | 3,900 |  | 8,400
Impairment charge |  |  | $ 2,400 |  |  |
Contract liability |  | 178,900 |  | 178,900 |  | 189,500
Deferred revenue, non-current |  | 169,400 |  | 169,400 |  | 179,800
Deferred revenue-current |  | 9,500 |  | $ 9,500 |  | 9,700
Deferred revenue, term |  |  |  | 20 years |  |
Distribution agreements termination expense |  |  |  |  |  | 193,800
Marketing and advertising expense |  | 46,700 | 25,800 | $ 114,200 | $ 55,000 |
Research and development expense |  | 500 | 100 | 1,000 | 300 |
Exchange losses |  | (200) | (300) | (1,200) | (900) |
Foreign currency transaction loss |  | (700) | (2,000) | (700) | (4,800) |
Shares authorized (in shares) | 5 |  |  |  |  |
Freight expense |  | 16,100 | $ 14,600 | 45,200 | $ 26,300 |
Change in Accounting Method Accounted for as Change in Estimate |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |
Increase in net income |  | $ 9,500 |  | $ 9,500 |  |
Basic (in USD per share) |  | $ 0.11 |  | $ 0.11 |  |
Diluted (in USD per share) |  | $ 0.11 |  | $ 0.11 |  |
Stock Incentive Plan |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |
Percentage of provision for annual increase in shares | 1500.00% |  |  |  |  |
Related Party |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |
Accrued promotional allowance |  | $ 82,500 |  | $ 82,500 |  | 13,900
Restricted cash |  |  |  |  |  | 38,800
Contract liability |  | $ 178,900 |  | $ 178,900 |  | $ 189,500
Minimum |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |
Estimated Useful Life in Years |  | 3 years |  | 3 years |  |
Maximum |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |
Estimated Useful Life in Years |  | 7 years |  | 7 years |  |

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