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Financial Statement Details (Tables) | 12 Months Ended
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Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of Inventories | Inventories consist of the following (in thousands):
| December 31,
| 2023 |  | 2022
Finished goods | $ | 21,264 |  |  | $ | 31,153 |
Raw materials and components | 1,616 |  |  | 6,823 |
Total inventories | $ | 22,880 |  |  | $ | 37,976 |
Summary of Prepaid Expenses and Other | Prepaid expenses and other consists of the following (in thousands):
| December 31,
| 2023 |  | 2022
Rebate receivables | $ | 1,950 |  |  | $ | 2,038 |
Receivables from contract manufacturers | 1,823 |  |  | 3,561 |
Other | 1,438 |  |  | 2,379 |
Total prepaid expenses and other | $ | 5,211 |  |  | $ | 7,978 |
Summary of Property, Plant and Equipment and Rental Assets | Property, plant and equipment consists of the following (in thousands):
| December 31,
| 2023 |  | 2022
Test equipment | $ | 19,717 |  |  | $ | 19,724 |
Computer equipment and purchased software | 4,590 |  |  | 4,603 |
Product tooling | 5,153 |  |  | 5,007 |
Furniture and fixtures | 1,331 |  |  | 1,214 |
Vehicles | 115 |  |  | 119 |
Leasehold improvements | 772 |  |  | 772 |
Total property, plant and equipment, gross | 31,678 |  |  | 31,439 |
Less—accumulated depreciation and amortization | (28,920) |  |  | (26,049) |
Total property, plant and equipment, net | $ | 2,758 |  |  | $ | 5,390 |
Rental assets consist of the following (in thousands):
| December 31,
| 2023 |  | 2022
Rental assets | $ | 12,086 |  |  | $ | 10,300 |
Less—accumulated depreciation | (7,003) |  |  | (5,484) |
Total rental assets | $ | 5,083 |  |  | $ | 4,816 |
Summary of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consist of the following (in thousands):
| December 31,
| 2023 |  | 2022
Royalties | $ | 845 |  |  | $ | 992 |
Payroll and related expenses | 4,159 |  |  | 8,873 |
Warranty obligations | 480 |  |  | 480 |
Professional fees | 310 |  |  | 738 |
Accrued interest | 1,038 |  |  | 1,112 |
Deferred revenue | 5,583 |  |  | 5,060 |
Customer advances | — |  |  | 2,828 |
Operating lease liabilities | 1,681 |  |  | 1,759 |
Accrued contract manufacturing liabilities | 7,537 |  |  | 1,416 |
Value added tax payables | 531 |  |  | 449 |
Other | 4,858 |  |  | 4,238 |
Total accrued expenses and other current liabilities | $ | 27,022 |  |  | $ | 27,945 |

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