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v3.24.2

Revenue (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Revenue |  |
Summary of company's revenue, net disaggregated by type of product and service | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2024 |  | 2023
Product sales | ​ | $ | 2,022 | ​ | $ | 755
Software as a service and related services | ​ |  | 200 | ​ |  | 179
Ancillary services | ​ |  | 53 | ​ |  | 46
Total revenue | ​ | $ | 2,275 | ​ | $ | 980
| ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022
Product sales | ​ | $ | 4,270 | ​ | $ | 6,681
Software as a service and related services | ​ |  | 784 | ​ |  | 348
Ancillary services | ​ |  | 376 | ​ |  | 239
Total revenue | ​ | $ | 5,430 | ​ | $ | 7,268
Summary of change in contract liabilities | ​
​ | ​ | ​ | ​
​ |  | Contract liabilities
Balance at January 1, 2023 | ​ | $ | 297
Prepayments and adjustments | ​ |  | 2,552
Revenue recognition | ​ |  | (784)
Balance at December 31, 2023 | ​ |  | 2,065
Contract liabilities, non-current | ​ | $ | 121
Balance at January 1, 2024 | ​ | $ | 2,065
Prepayments and adjustments | ​ |  | (711)
Revenue recognition | ​ |  | (200)
Balance at March 31, 2024 | ​ |  | 1,154
Contract liabilities, non-current | ​ | $ | 238
​ | ​
​ | ​ | ​ | ​
​ |  | Contract liabilities
Balance at January 1, 2022 | ​ | $ | 75
Prepayments | ​ |  | 570
Revenue recognition | ​ |  | (348)
Balance at December 31, 2022 | ​ |  | 297
Prepayments | ​ |  | 2,552
Revenue recognition | ​ |  | (784)
Balance at December 31, 2023 | ​ | $ | 2,065
Contract liabilities, noncurrent | ​ |  | 121
Summary of change in accounts receivables allowance |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ | ​ | 2023 | ​ | 2022
Beginning balance |  | $ | 290 |  | $ | 145
Reversal of account receivables allowance | ​ |  | (304) | ​ |  | (13)
Bad debt expense | ​ |  | 194 | ​ |  | 158
Ending balance | ​ | $ | 180 | ​ | $ | 290
​

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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