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v3.21.2

Note 3 - Balance Sheet Components - Summary of Balance Sheet Amounts (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Cash | $ 21,579 | $ 23,977
Cash equivalents | 66,535 | 68,390
Cash and cash equivalents | 88,114 | 92,367
Restricted cash | 523 | 525
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance | 88,637 | 92,892
Inventories: |  |
Finished goods | 2,945 | 3,071
Raw materials | 930 | 1,047
Reserve for obsolescence | (169) | (339)
Inventory, Net, Total | 3,706 | 3,779
Other accrued expenses: |  |
Sales returns | 195 | 189
Employee-related expense | 960 | 1,149
Warehousing, inventory-related and other | 698 | 584
Accrued Liabilities, Current, Total | 1,853 | 1,922
Deferred revenue: |  |
Deferred revenue | 5,713 | 3,091
Unshipped Product [Member] |  |
Deferred revenue: |  |
Deferred revenue | 3,686 | 1,005
Auto ship advances [Member] |  |
Deferred revenue: |  |
Deferred revenue | 1,918 | 1,977
Product and Service, Other [Member] |  |
Deferred revenue: |  |
Deferred revenue | $ 109 | $ 109

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