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Selected Balance Sheet Information | 12 Months Ended
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Dec. 31, 2023
Selected Balance Sheet Information [Abstract] |
Selected balance sheet information |
3. | Selected balance sheet information
Inventory consists of the following at: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
(in thousands) | ​ | 2023 | ​ | 2022
Raw material | ​ | $ | 4,714 | ​ | $ | 2,390
Work-in-process | ​ |  | 654 | ​ |  | 1,033
Finished goods | ​ |  | 5,615 | ​ |  | 3,534
​ | ​ | $ | 10,983 | ​ | $ | 6,957
​ Property and equipment, net consists of the following at: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
(in thousands) | ​ | 2023 | ​ | 2022
Office furniture and equipment | ​ | $ | 402 | ​ | $ | 350
Lab equipment | ​ |  | 2,721 | ​ |  | 2,684
Computer equipment and software | ​ |  | 776 | ​ |  | 618
Leasehold improvements | ​ |  | 98 | ​ |  | 95
Capital equipment in process | ​ |  | 554 | ​ |  | 231
​ | ​ |  | 4,551 | ​ |  | 3,978
Less: Accumulated depreciation and amortization | ​ |  | 2,788 | ​ |  | 2,280
​ | ​ | $ | 1,763 | ​ | $ | 1,698
​ ​ Depreciation is determined using the straight-line method over the estimated useful lives of the respective assets, generally three to five years. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the term of the lease. Depreciation expense was $0.5 million and $0.4 million for the years ended December 31, 2023 and 2022, respectively. Accrued expenses consist of the following at: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
(in thousands) | ​ | 2023 | ​ | 2022
Clinical trial and other professional fees | ​ | $ | 277 | ​ | $ | 1,733
Bonuses | ​ |  | 3,335 | ​ |  | 2,303
Paid time off | ​ |  | 770 | ​ |  | 960
Customer rebates | ​ | ​ | 411 | ​ | ​ | 256
Operating lease liability, current portion | ​ | ​ | 231 | ​ | ​ | 222
Taxes | ​ | ​ | 125 | ​ | ​ | 120
Other | ​ |  | 831 | ​ |  | 775
​ | ​ | $ | 5,980 | ​ | $ | 6,369
​ ​ ​ ​ ​ ​ ​ ​

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//210/tableOfContent + Details
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