Summary of significant accounting policies - Narrative (Details) |
3 Months Ended | 6 Months Ended | |||
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Jun. 30, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Jun. 30, 2026
USD ($)
segment
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Jun. 30, 2025
USD ($)
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Dec. 31, 2025
USD ($)
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| Accounting Policies [Line Items] | |||||
| Cash held in banks outside of the US | $ 300,000 | $ 300,000 | $ 100,000 | ||
| Guaranteed investment certificates | 300,000 | 300,000 | 300,000 | ||
| Allowance for doubtful accounts for expected credit losses | 0 | $ 0 | 0 | ||
| Product warranty term | 1 year | ||||
| Number of operating segments | segment | 1 | ||||
| Number of reportable segments | segment | 1 | ||||
| Contract assets | 100,000 | $ 100,000 | 100,000 | ||
| Non-current deferred revenue | 0 | 0 | 0 | ||
| Deferred revenue | 5,508,000 | 5,508,000 | $ 4,734,000 | ||
| Revenue recognized which was included in deferred revenue in prior period | 900,000 | $ 1,100,000 | 2,500,000 | $ 3,200,000 | |
| Advertising costs | 100,000 | 100,000 | 100,000 | 100,000 | |
| Software, In-Development, Internally Developed, and Purchased | |||||
| Accounting Policies [Line Items] | |||||
| Amortization expense | $ 100,000 | $ 100,000 | $ 100,000 | $ 200,000 | |
| X | ||||||||||
- Definition Accounting Policies No definition available.
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- Definition The duration of a warranty. No definition available.
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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