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v3.23.1

Segment reporting and concentrations - Additional information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 USD ($) customer segment | Mar. 31, 2022 customer | Dec. 31, 2022 USD ($) customer
Segment reporting information |  |  |
Number of reportable segments | segment | 3 |  |
Right-of-use-asset, net | $ | $ 4,109 |  | $ 4,309
Classification of segment assets | $ | $ 49,135 |  | $ 48,042
Sales revenue,net | Customer concentration risk | Non-US |  |  |
Segment reporting information |  |  |
Concentration risk, percentage | 39.00% | 37.00% |
Foreign customer | Accounts receivable | Customer concentration risk |  |  |
Segment reporting information |  |  |
Concentration risk, percentage | 38.00% |  | 44.00%
One client | Sales revenue,net | Customer concentration risk |  |  |
Segment reporting information |  |  |
Number of clients | 1 |  |
Concentration risk, percentage | 11.00% |  |
Another client | Sales revenue,net | Customer concentration risk |  |  |
Segment reporting information |  |  |
Concentration risk, percentage | 11.00% | 21.00% |
Another client | Accounts receivable | Customer concentration risk |  |  |
Segment reporting information |  |  |
Number of clients | 2 |  |
Concentration risk, percentage | 30.00% |  |
Four clients | Accounts receivable | Customer concentration risk |  |  |
Segment reporting information |  |  |
Number of clients |  |  | 4
Concentration risk, percentage |  |  | 45.00%
Client | Sales revenue,net | Customer concentration risk | United States |  |  |
Segment reporting information |  |  |
Number of clients | 0 | 0 |
Client | Accounts receivable | Customer concentration risk |  |  |
Segment reporting information |  |  |
Number of clients | 0 |  | 0
Client | Minimum | Sales revenue,net | Customer concentration risk |  |  |
Segment reporting information |  |  |
Concentration risk, percentage | 10.00% | 10.00% |
Client | Minimum | Accounts receivable | Customer concentration risk |  |  |
Segment reporting information |  |  |
Concentration risk, percentage | 10.00% |  | 10.00%

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