Summary of significant accounting policies - Additional Information (Details) |
3 Months Ended | 12 Months Ended | ||||||||||||||
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Mar. 31, 2026
USD ($)
distribution_channel
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Dec. 31, 2025
USD ($)
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Sep. 30, 2025
USD ($)
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Jun. 30, 2025
USD ($)
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Mar. 31, 2025
USD ($)
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Dec. 31, 2024
USD ($)
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Sep. 30, 2024
USD ($)
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Jun. 30, 2024
USD ($)
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Mar. 31, 2024
USD ($)
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Dec. 31, 2023
USD ($)
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Sep. 30, 2023
USD ($)
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Jun. 30, 2023
USD ($)
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Mar. 31, 2026
USD ($)
distribution_channel
segment
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Mar. 31, 2025
USD ($)
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Mar. 31, 2024
USD ($)
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Aug. 05, 2025
USD ($)
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| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Allowance for doubtful accounts | $ 900,000 | $ 1,300,000 | $ 900,000 | $ 1,300,000 | ||||||||||||
| Sales allowances | 48,900,000 | 45,000,000.0 | 48,900,000 | 45,000,000.0 | ||||||||||||
| Reserve for excess and obsolete inventory | 15,500,000 | 14,400,000 | 15,500,000 | 14,400,000 | ||||||||||||
| Property and equipment, net | 41,496,000 | 28,787,000 | 41,496,000 | 28,787,000 | ||||||||||||
| Impairment of long-lived assets held-for-use | 0 | 0 | $ 0 | |||||||||||||
| Internal-use software costs | $ 62,800,000 | 50,900,000 | 62,800,000 | 50,900,000 | ||||||||||||
| Impairment charges | $ 0 | 0 | 0 | |||||||||||||
| Number of operating segments | segment | 1 | |||||||||||||||
| Number of reporting segments | segment | 1 | |||||||||||||||
| Number of distribution channels | distribution_channel | 2 | 2 | ||||||||||||||
| Net sales | $ 449,292,000 | $ 489,505,000 | $ 343,936,000 | $ 353,739,000 | 332,645,000 | $ 355,320,000 | $ 301,075,000 | $ 324,477,000 | $ 321,143,000 | $ 270,943,000 | $ 215,507,000 | $ 216,339,000 | $ 1,636,472,000 | 1,313,517,000 | 1,023,932,000 | |
| Cost of sales | 479,125,000 | 377,831,000 | 299,836,000 | |||||||||||||
| Advertising costs | 361,300,000 | 281,500,000 | 209,200,000 | |||||||||||||
| rhode | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Contingent consideration payable | $ 200,000,000.0 | |||||||||||||||
| Contingent consideration payable, payment period | 4 months | |||||||||||||||
| Net sales | 293,500,000 | |||||||||||||||
| Retail Product Displays | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Property and equipment, net | $ 75,600,000 | $ 69,300,000 | $ 75,600,000 | 69,300,000 | ||||||||||||
| Estimated useful lives (in years) | 3 years | 3 years | ||||||||||||||
| Amortization expense | $ 35,000,000.0 | 22,300,000 | 11,400,000 | |||||||||||||
| Software Costs | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Estimated useful lives (in years) | 3 years | 3 years | ||||||||||||||
| Amortization expense | $ 13,300,000 | 6,600,000 | 5,000,000.0 | |||||||||||||
| Minimum | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Intangible asset useful life (in years) | 3 years | 3 years | ||||||||||||||
| Maximum | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Intangible asset useful life (in years) | 15 years | 15 years | ||||||||||||||
| Shipping and Handling | ||||||||||||||||
| Summary Of Significant Accounting Policies [Line Items] | ||||||||||||||||
| Net sales | $ 6,000,000.0 | 3,900,000 | 3,400,000 | |||||||||||||
| Cost of sales | $ 97,600,000 | $ 74,100,000 | $ 57,100,000 | |||||||||||||