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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 606
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
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-Section S99
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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) Customer	Mar. 31, 2022 USD ($) Customer	Dec. 31, 2022 USD ($) Customer
Accounts Receivable
Reserve for sales returns	$ 15		$ 19
Inventory
Less reserve for obsolescence	0		0
Revenue Recognition
Contract liability related to deferred revenues	2		2
Cash flows from operations	(2,426)	$ (2,168)
Net loss	(2,116)	(2,240)
Cash equivalents	4,993		3,074
Cash and cash equivalents	5,167		3,517
Accumulated deficit	(31,758)		(29,642)
Working capital	4,900
Allowance for credit losses	$ 0		0
Product warranty limited period	1 year
Assumed dividend yield	0.00%
Cash and cash equivalents balances exceeding FDIC insured limits	$ 4,700		$ 3,000
Percentage of outsource of contract manufacturing	100.00%
Shipping and Handling [Member]
Revenue Recognition
Shipping and handling fees paid by customers	$ 0	1
Shipping costs for delivery of product to customers	$ 15	$ 30
Accounts Receivable [Member] \| Credit Concentration Risk [Member]
Revenue Recognition
Number of customers \| Customer	3
Number of reseller customer \| Customer			2
Accounts Receivable [Member] \| Credit Concentration Risk [Member] \| Customer one
Revenue Recognition
Concentration risk (as a percent)	28.00%		43.00%
Accounts Receivable [Member] \| Credit Concentration Risk [Member] \| Customer two
Revenue Recognition
Concentration risk (as a percent)	27.00%		18.00%
Accounts Receivable [Member] \| Credit Concentration Risk [Member] \| Customer Three
Revenue Recognition
Concentration risk (as a percent)	13.00%
Revenue from Contract with Customer, Product and Service Benchmark [Member] \| Customer Concentration Risk [Member]
Revenue Recognition
Number of reseller customers \| Customer	1	1
Revenue from Contract with Customer, Product and Service Benchmark [Member] \| Customer Concentration Risk [Member] \| Customer one
Revenue Recognition
Concentration risk (as a percent)	20.00%	20.00%
Revenue from Contract with Customer, Product and Service Benchmark [Member] \| Geographic Concentration Risk [Member] \| Major Customer
Revenue Recognition
Concentration risk (as a percent)	75.00%