Note 8 - Accrued Liabilities  | 
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| Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] | 
    8. Accrued Liabilities 
 Accrued liabilities consisted of the following: 
 
 
 Warranty 
 The current portion of the device warranty liability is classified as a component of Accrued liabilities, while the long-term portion of the device warranty liability is classified as a component of Other non-current liabilities in the condensed consolidated balance sheets. A reconciliation of the changes in the device warranty liability for the three and six months ended June 30, 2023 is as follows: 
 
 
 
 
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- Definition The entire disclosure for accounts payable, accrued expenses, and other liabilities that are classified as current at the end of the reporting period. No definition available. 
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- References No definition available. 
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