(3) Supplemental Balance Sheet Information Components of selected captions in the condensed consolidated balance sheets consisted of the following: Inventory: | | | | | | | | | June 30, | | December 31, | | | 2022 | | 2021 | Raw materials | | $ | 1,050 | | $ | 829 | Sub-assemblies | | | 1,202 | | | 682 | Finished goods | | | 1,974 | | | 1,492 | Total inventory | | $ | 4,226 | | $ | 3,003 |
Prepaid expenses and other current assets: | | | | | | | | | June 30, | | December 31, | | | 2022 | | 2021 | Prepaid insurance | | $ | 716 | | $ | 736 | Prepaid advertising and marketing | | | 356 | | | 698 | Other current assets | | | 197 | | | 188 | Total prepaid expenses and other current assets | | $ | 1,269 | | $ | 1,622 |
Accrued and other liabilities: | | | | | | | | | June 30, | | December 31, | | | 2022 | | 2021 | Payroll and benefits | | $ | 2,362 | | $ | 1,527 | Accrued legal settlements | | | 2,000 | | | — | Customer deposits | | | 605 | | | 549 | Taxes | | | 190 | | | 307 | Accrued insurance premium | | | 151 | | | 301 | Accrued professional | | | 284 | | | 300 | Other liabilities | | | 222 | | | 185 | Total accrued and other liabilities | | $ | 5,814 | | $ | 3,169 |
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