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Balance Sheet Components (Tables) | 9 Months Ended
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Sep. 30, 2023
Balance Sheet Related Disclosures [Abstract] |
Summary of Cash, Cash Equivalents and Short-term Investments | Cash, cash equivalents, and marketable securities consist of the following:
|  | September 30, |  |  | December 31, |
Cash and cash equivalents |  | 2023 |  |  | 2022 |
Cash |  | $ | 23,739 |  |  | $ | 27,970 |
Money market accounts |  |  | 71,098 |  |  |  | 113,534 |
Corporate bonds |  |  | — |  |  |  | 6,474 |
U.S. Treasury securities |  |  | 8,927 |  |  |  | 18,939 |
Institutional Insured Liquidity Deposit Savings |  |  | 20,844 |  |  |  | 20,097 |
Total cash and cash equivalents |  | $ | 124,608 |  |  | $ | 187,014 |
Marketable securities |  |  |  |  |  |
U.S. Treasury securities |  |  | 13,432 |  |  |  | — |
Total marketable securities |  | $ | 13,432 |  |  | $ | — |
Schedule of Net Accounts Receivable Balance Concentrations by Major Category | Net accounts receivable (gross accounts receivable, net of allowances) balance concentrations by major category as of September 30, 2023 and December 31, 2022 were as follows:
|  | September 30, |  |  | December 31, |
Net accounts receivable |  | 2023 |  |  | 2022 |
Rental (1) |  | $ | 6,967 |  |  | $ | 5,246 |
Business-to-business and other receivables (2) |  |  | 41,413 |  |  |  | 57,479 |
Total net accounts receivable |  | $ | 48,380 |  |  | $ | 62,725 |
(1) Rental includes Medicare, Medicaid/other government, private insurance, and patient pay. (2) Business-to-business receivables included extended terms for two customers: 1) One customer had an accounts receivable balance of $12,162 and $22,641 as of September 30, 2023 and December 31, 2022; and 2) One customer had accounts receivable balances of $5,848 and $9,861 as of September 30, 2023 and December 31, 2022, respectively. Each customer received extended payment terms through a direct financing plan offered.
Schedule of Allowances for Accounts Receivable | The following table sets forth the accounts receivable allowances as of September 30, 2023 and December 31, 2022:
|  | September 30, |  |  | December 31, |
Allowances - accounts receivable |  | 2023 |  |  | 2022 |
Doubtful accounts |  | $ | 548 |  |  | $ | 77 |
Sales returns |  |  | 615 |  |  |  | 483 |
Total allowances - accounts receivable |  | $ | 1,163 |  |  | $ | 560 |
Breakdown of Company's Revenue from U.S. and Non-U.S. Sources | A portion of revenue is earned from sales outside the United States. Approximately 76.9% and 48.3% of the non-U.S. revenue for the three months ended September 30, 2023 and 2022, respectively, were invoiced in Euros. Approximately 78.0% and 70.5% of the non-U.S. revenue for the nine months ended September 30, 2023 and 2022, respectively, were invoiced in Euros. A breakdown of the Company’s revenue from U.S. and non-U.S. sources for the three and nine months ended September 30, 2023 and 2022, respectively, is as follows:
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
U.S. revenue |  | $ | 58,354 |  |  | $ | 90,311 |  |  | $ | 171,887 |  |  | $ | 208,690 |
Non-U.S. revenue |  |  | 25,613 |  |  |  | 15,078 |  |  |  | 67,877 |  |  |  | 80,460 |
Total revenue |  | $ | 83,967 |  |  | $ | 105,389 |  |  | $ | 239,764 |  |  | $ | 289,150 |
Schedule of Inventories | Inventories that are considered current consist of the following:
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Raw materials and work-in-progress |  | $ | 17,287 |  |  | $ | 26,496 |
Finished goods |  |  | 9,502 |  |  |  | 9,324 |
Less: reserves |  |  | (2,774 | ) |  |  | (1,727 | )
Inventories, net |  | $ | 24,015 |  |  | $ | 34,093 |
Summary of Depreciation and Amortization Expense of Rental Equipment and Other Property and Equipment | Depreciation and amortization expense related to rental equipment and other property and equipment are summarized below for the three and nine months ended September 30, 2023 and 2022, respectively.
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Rental equipment |  | $ | 3,364 |  |  | $ | 2,795 |  |  | $ | 9,680 |  |  | $ | 8,153 |
Other property and equipment |  |  | 1,045 |  |  |  | 983 |  |  |  | 3,044 |  |  |  | 2,936 |
Total depreciation and amortization |  | $ | 4,409 |  |  | $ | 3,778 |  |  | $ | 12,724 |  |  | $ | 11,089 |
Summary of Property Plant and Equipment and Rental Equipment with Associated Accumulated Depreciation | Property and equipment and rental equipment with associated accumulated depreciation is summarized below as of September 30, 2023 and December 31, 2022, respectively.
|  | September 30, |  |  | December 31, |
Property and equipment |  | 2023 |  |  | 2022 |
Rental equipment, net of allowances of $2,491 and $2,255, respectively |  | $ | 66,489 |  |  | $ | 61,679 |
Other property and equipment |  |  | 36,336 |  |  |  | 33,434 |
Property and equipment |  |  | 102,825 |  |  |  | 95,113 |
Accumulated depreciation |  |  |  |  |  |
Rental equipment |  |  | 30,416 |  |  |  | 31,320 |
Other property and equipment |  |  | 22,884 |  |  |  | 20,524 |
Accumulated depreciation |  |  | 53,300 |  |  |  | 51,844 |
Property and equipment, net |  |  |  |  |  |
Rental equipment, net of allowances of $2,491 and $2,255, respectively |  |  | 36,073 |  |  |  | 30,359 |
Other property and equipment |  |  | 13,452 |  |  |  | 12,910 |
Property and equipment, net |  | $ | 49,525 |  |  | $ | 43,269 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill for the nine months ended September 30, 2023 were as follows:
Balance as of December 31, 2022 |  | $ | 32,852 |
Translation adjustment |  |  | (80 | )
Impairment charge |  |  | (32,894 | )
Acquisition |  |  | 9,991 |
Balance as of September 30, 2023 |  | $ | 9,869 |
Summary of Changes in Net Carrying Values of Intangibles | The following tables represent the changes in net carrying values of intangible assets as of the respective dates:
|  | Average |  |  |  |  |  |  |  |  |
|  | estimated |  | Gross |  |  |  |  |  |  |
|  | useful lives |  | carrying |  |  | Accumulated |  |  |  |
September 30, 2023 |  | (in years) |  | amount |  |  | amortization |  |  | Net amount |
Developed technology |  | 10 |  | $ | 31,904 |  |  | $ | 132 |  |  | $ | 31,772 |
Licenses |  | 10 |  |  | 185 |  |  |  | 185 |  |  |  | — |
Patents and websites |  | 5 |  |  | 4,518 |  |  |  | 4,411 |  |  |  | 107 |
Customer relationships |  | 4 |  |  | 2,849 |  |  |  | 1,275 |  |  |  | 1,574 |
Trade name |  | 4 |  |  | 197 |  |  |  | 1 |  |  |  | 196 |
Commercials |  | 3 |  |  | 494 |  |  |  | 76 |  |  |  | 418 |
Total |  |  |  | $ | 40,147 |  |  | $ | 6,080 |  |  | $ | 34,067 |
|  | Average |  |  |  |  |  |  |  |  |
|  | estimated |  | Gross |  |  |  |  |  |  |
|  | useful lives |  | carrying |  |  | Accumulated |  |  |  |
December 31, 2022 |  | (in years) |  | amount |  |  | amortization |  |  | Net amount |
Licenses |  | 10 |  | $ | 185 |  |  | $ | 183 |  |  | $ | 2 |
Patents and websites |  | 5 |  |  | 4,514 |  |  |  | 4,353 |  |  |  | 161 |
Customer relationships |  | 4 |  |  | 1,284 |  |  |  | 1,284 |  |  |  | — |
Commercials |  | 2-3 |  |  | 256 |  |  |  | 242 |  |  |  | 14 |
Total |  |  |  | $ | 6,239 |  |  | $ | 6,062 |  |  | $ | 177 |
Schedule of Annual Estimated Amortization Expense | Annual estimated amortization expense for each of the succeeding fiscal years is as follows:
|  | September 30, |
|  | 2023 |
Remaining 3 months of 2023 |  | $ | 968 |
2024 |  |  | 3,866 |
2025 |  |  | 3,818 |
2026 |  |  | 3,687 |
2027 |  |  | 3,515 |
2028 |  |  | 3,190 |
Thereafter |  |  | 15,023 |
|  | $ | 34,067 |
Schedule of Accounts Payable and Accrued Expenses | Accounts payable and accrued expenses as of September 30, 2023 and December 31, 2022 consisted of the following:
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Accounts payable |  | $ | 15,408 |  |  | $ | 18,237 |
Accrued inventory (in-transit and unvouchered receipts) and trade payables |  |  | 9,754 |  |  |  | 10,837 |
Accrued purchasing card liability |  |  | 2,607 |  |  |  | 2,606 |
Accrued franchise, sales and use taxes |  |  | 456 |  |  |  | 492 |
Other accrued expenses |  |  | 2,188 |  |  |  | 1,802 |
Total accounts payable and accrued expenses |  | $ | 30,413 |  |  | $ | 33,974 |
Schedule of Accrued Payroll | Accrued payroll as of September 30, 2023 and December 31, 2022 consisted of the following:
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Accrued bonuses |  | $ | 1,106 |  |  | $ | 2,620 |
Accrued wages and other payroll related items |  |  | 3,963 |  |  |  | 4,967 |
Accrued vacation |  |  | 3,187 |  |  |  | 3,133 |
Accrued employee stock purchase plan deductions |  |  | 113 |  |  |  | 470 |
Total accrued payroll |  | $ | 8,369 |  |  | $ | 11,190 |

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