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Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Amortization of intangible assets from acquisitions | $ 1,378 | $ 1,206 | $ 2,559 | $ 2,969
Related party support services fee income net of related expenses | 1,693 |  | 2,925 |
Sales and Marketing |  |  |  |
Amortization of intangible assets from acquisitions | 642 | 437 | 1,172 | 1,179
Related party support services fee income net of related expenses | 107 |  | 167 |
General and Administrative |  |  |  |
Amortization of intangible assets from acquisitions | 84 | 141 | 112 | 406
Related party support services fee income net of related expenses | 348 |  | 481 |
Product development |  |  |  |
Related party support services fee income net of related expenses | 675 |  | 951 |
Service Costs |  |  |  |
Amortization of intangible assets from acquisitions | 652 | $ 628 | 1,275 | $ 1,384
Related party support services fee income net of related expenses | $ 563 |  | $ 1,326 |

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