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Significant Customers, Concentrations of Credit Risk, and Geographic Information (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) segment customer	Dec. 31, 2023 USD ($) customer
Significant Customers, Concentrations of Credit Risk and Geographic Information
Number of operating segments | segment	1
Revenue	$ 11,679,000	$ 13,940,000
Allowance for doubtful accounts	0	0
Net revenue
Significant Customers, Concentrations of Credit Risk and Geographic Information
Revenue	$ 11,679,000	$ 13,940,000
Net revenue | Customer Concentration Risk | Customer A
Significant Customers, Concentrations of Credit Risk and Geographic Information
Concentration risk (as a percent)	15.00%	12.00%
Net revenue | Customer Concentration Risk | Customer B
Significant Customers, Concentrations of Credit Risk and Geographic Information
Concentration risk (as a percent)	12.00%	22.00%
Net revenue | Customer Concentration Risk | Customer C
Significant Customers, Concentrations of Credit Risk and Geographic Information
Concentration risk (as a percent)		10.00%
Net revenue | Geographic Concentration Risk | United States
Significant Customers, Concentrations of Credit Risk and Geographic Information
Revenue	$ 5,160,000	$ 6,726,000
Net revenue | Geographic Concentration Risk | Asia and Middle East
Significant Customers, Concentrations of Credit Risk and Geographic Information
Revenue	2,623,000	4,022,000
Net revenue | Geographic Concentration Risk | Europe and other
Significant Customers, Concentrations of Credit Risk and Geographic Information
Revenue	$ 3,896,000	$ 3,192,000
Accounts receivable | Credit Concentration Risk
Significant Customers, Concentrations of Credit Risk and Geographic Information
Number of customers | customer	1	2
Accounts receivable | Credit Concentration Risk | Customer One
Significant Customers, Concentrations of Credit Risk and Geographic Information
Concentration risk (as a percent)	41.00%	35.00%
Accounts receivable | Credit Concentration Risk | Customer Two
Significant Customers, Concentrations of Credit Risk and Geographic Information
Concentration risk (as a percent)		16.00%
Assets
Significant Customers, Concentrations of Credit Risk and Geographic Information
Total long-lived assets	$ 6,217,000	$ 5,734,000
Assets | Geographic Concentration Risk | United States
Significant Customers, Concentrations of Credit Risk and Geographic Information
Total long-lived assets	1,440,000	733,000
Assets | Geographic Concentration Risk | Europe
Significant Customers, Concentrations of Credit Risk and Geographic Information
Total long-lived assets	4,446,000	4,784,000
Assets | Geographic Concentration Risk | Asia
Significant Customers, Concentrations of Credit Risk and Geographic Information
Total long-lived assets	$ 331,000	$ 217,000

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Amount of allowance for credit loss on accounts receivable.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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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.

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