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Acquisitions (Details) $ in Thousands, £ in Millions, $ in Millions |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 06, 2020 USD ($) | Nov. 06, 2020 GBP (£) | Apr. 30, 2020 USD ($) | Apr. 30, 2020 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Apr. 30, 2020 CAD ($)
Acquisition of CDF Group Limited |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  | $ 0 | $ 1,518 |
Interwork Group, Inc. |  |  |  |  |  |  |
Acquisition of CDF Group Limited |  |  |  |  |  |  |
Aggregate purchase price |  |  | $ 3,600 | $ 5.0 |  |  |
Potential earn-out |  |  | $ 800 |  |  |  | $ 1.1
Earn-out liability paid |  |  |  |  | $ 900 |  |
CDF Group Limited |  |  |  |  |  |  |
Acquisition of CDF Group Limited |  |  |  |  |  |  |
Aggregate purchase price | $ 17,400 | £ 13.3 |  |  |  |  |

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