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v3.21.2

SEGMENT INFORMATION (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) segment | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Segment information |  |  |  |  |
Number of operating segments | segment |  |  | 1 |  |
Revenues derived from foreign subsidiaries | $ 103,509 | $ 94,653 | $ 306,723 | $ 273,696 |
Identifiable assets | $ 363,610 |  | $ 363,610 |  | $ 349,197
Total Revenue | Customer Concentration Risk | Customer One |  |  |  |  |
Segment information |  |  |  |  |
Percentage of concentration risk | 16.00% | 20.00% | 16.00% | 15.00% |
Trade receivables | Customer Concentration Risk | Customer |  |  |  |  |
Segment information |  |  |  |  |
Percentage of concentration risk |  |  | 16.00% |  | 22.00%
Outside the United States |  |  |  |  |
Segment information |  |  |  |  |
Revenues derived from foreign subsidiaries | $ 45,350 | $ 41,411 | $ 140,565 | $ 128,170 |
Identifiable assets | 32,452 |  | 32,452 |  | $ 34,855
Wholly owned foreign subsidiaries |  |  |  |  |
Segment information |  |  |  |  |
Revenues derived from foreign subsidiaries | $ 39,183 | $ 38,468 | $ 124,050 | $ 113,834 |

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