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Note 4 - Balance Sheet Components - Summary of Balance Sheet Amounts (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Cash | $ 7,925 | $ 8,971
Cash equivalents | 5,608 | 47,207
Cash and Cash Equivalents, at Carrying Value | 13,533 | 56,178
Restricted cash | 34 | 39
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents | 13,567 | 56,217
Inventories: |  |
Finished goods | 2,770 | 3,438
Raw materials | 502 | 855
Inventory, Net | 3,272 | 4,293
Property and equipment: |  |
Office equipment | 477 | 456
Office software | 1,029 | 979
Furniture and fixtures | 241 | 243
Leasehold improvements | 753 | 760
Construction in progress | 0 | 40
Property and equipment, at cost | 2,500 | 2,478
Accumulated depreciation and amortization | (2,310) | (2,212)
Property, Plant and Equipment, Net | 190 | 266
Other accrued expenses: |  |
Sales returns | 85 | 81
Employee-related expense | 656 | 668
Warehousing, inventory-related and other | 684 | 421
Accrued Liabilities, Current | 1,425 | 1,170
Deferred revenue: |  |
Deferred revenue | 6,428 | 6,166
Unshipped Product [Member] |  |
Deferred revenue: |  |
Deferred revenue | 4,940 | 4,417
Auto ship advances [Member] |  |
Deferred revenue: |  |
Deferred revenue | $ 1,488 | $ 1,749

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