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v3.22.2

Segment reporting and concentrations - Additional information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 USD ($) client | Jun. 30, 2021 | Jun. 30, 2022 USD ($) client segment | Jun. 30, 2021 client | Dec. 31, 2021 USD ($) client
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | segment |  |  | 3 |  |
Right-of-use-asset, net | $ | $ 4,395 |  | $ 4,395 |  | $ 5,621
Classification of segment assets | $ | $ 49,923 |  | $ 49,923 |  | $ 59,217
Foreign Customer [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk | Non-US |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk, percentage | 38.00% | 47.00% | 38.00% | 48.00% |
Foreign Customer [Member] | Accounts receivable | Customer Concentration Risk |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 33.00% |  | 37.00%
One Client [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk | US |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  | 1 |  |
Concentration risk, percentage | 13.00% |  | 17.00% |  |
One Client [Member] | Accounts receivable | Customer Concentration Risk |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  |  |  | 1
Concentration risk, percentage |  |  |  |  | 19.00%
Another client [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk | US |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  |  | 2 |
Concentration risk, percentage | 10.00% | 11.00% |  | 22.00% |
Three Clients [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk | US |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk, percentage |  | 11.00% |  |  |
Three Clients [Member] | Accounts receivable | Customer Concentration Risk |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  | 3 |  |
Concentration risk, percentage |  |  | 44.00% |  |
Client [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk | US |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients | 0 |  | 0 |  |
Concentration risk, percentage | 10.00% |  | 10.00% |  |
Client [Member] | Accounts receivable | Customer Concentration Risk |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  | 0 |  | 0
Concentration risk, percentage |  |  | 10.00% |  | 10.00%

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