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Organization and significant accounting policies - Narrative (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) | Nov. 30, 2020 USD ($) | Dec. 31, 2023 USD ($) reportable_segment reporting_unit | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Short-Term Debt [Line Items] |  |  |  |  |
Number of reportable segments | reportable_segment |  |  | 1 |  |
Number of reportable units | reporting_unit |  |  | 1 |  |
Contract with customer, liability, revenue recognized |  |  | $ 400,000 |  |
Inventory write-down |  |  | 5,700,000 |  |
Impairment of intangible assets (excluding goodwill) |  |  | 5,800,000 | $ 110,400,000 | $ 0
Unrecognized tax benefits |  |  | 954,000 | 610,000 | 255,000
Sales and excise tax payable |  |  | 5,400,000 | 3,700,000 |
Advertising expense |  |  | 1,500,000 | $ 800,000 | $ 600,000
Interest Expense |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Sales and excise tax payable |  |  | $ 400,000 |  |
Customer Concentration Risk | Revenue Benchmark | One Customer |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 16.00% | 18.00% | 17.00%
Customer Concentration Risk | Accounts Receivable | One Customer |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 14.00% |  |
Customer Concentration Risk | Accounts Receivable | Two Customers |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  |  | 26.00% |
Supplier Concentration Risk | Accounts Payable | One Supplier |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 12.00% | 23.00% |
Tax Attributes Carried Forward |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Unrecognized tax benefits |  |  | $ 2,200,000 |  |
Assets Held for Rent |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Property, plant and equipment, useful life (year) |  |  | 3 years |  |
Impairment of intangible assets (excluding goodwill) |  |  | $ 0 | $ 0 | $ 0
Minimum |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Property, plant and equipment, useful life (year) |  |  | 3 years |  |
Standard warranty, term |  |  | 1 year |  |
Maximum |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Property, plant and equipment, useful life (year) |  |  | 10 years |  |
Standard warranty, term |  |  | 7 years |  |
Series A-1 and A-2, Preferred Stock |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Equity securities without readily determinable fair value, amount |  |  | $ 4,100,000 | 4,100,000 |
Series E Preferred Stock |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Equity securities without readily determinable fair value, amount |  |  | 995,000 | 995,000 |
Convertible Debt Securities |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Debt securities, gain (loss), total |  |  | $ 0 | $ 700,000 | $ 0
Contingent Convertible Preferred Stock | Series A-2 Preferred Stock |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Equity securities without readily determinable fair value, amount |  | $ 1,000,000 |  |  |
Contingent Convertible Preferred Stock | Preferred Stock, Class E |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Contingent milestone payment | $ 200,000 | 2,000,000 |  |  |
Contingent Convertible Preferred Stock | Preferred Stock, Class E | PanTHERA Cryosolutions Investment |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |
Equity securities without readily determinable fair value, amount |  | $ 995,000 |  |  |

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