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Business Combinations - Purchase Price Allocation (Details) - USD ($) $ in Thousands | Jan. 07, 2019 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 56,147 | $ 58,425
Dynasty Marketplace, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Net tangible assets | $ 305 |  |
Identified intangible assets | $ 20,750 |  |
Estimated Useful Life (in years) | 6 years |  |
Goodwill | $ 42,877 |  |
Other noncurrent assets | 35 |  |
Total assets acquired | 63,967 |  |
Accrued and other liabilities | 48 |  |
Deferred tax liability, net | 3,711 |  |
Total liabilities assumed | 3,759 |  |
Purchase consideration | 60,208 |  |
Dynasty Marketplace, Inc. | Technology |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 5,730 |  |
Estimated Useful Life (in years) | 4 years |  |
Dynasty Marketplace, Inc. | Database |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 4,710 |  |
Estimated Useful Life (in years) | 10 years |  |
Dynasty Marketplace, Inc. | Customer relationships |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 1,110 |  |
Estimated Useful Life (in years) | 5 years |  |
Dynasty Marketplace, Inc. | Backlog |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 470 |  |
Estimated Useful Life (in years) | 1 year |  |
Dynasty Marketplace, Inc. | Trademark & trade name |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 1,390 |  |
Estimated Useful Life (in years) | 10 years |  |
Dynasty Marketplace, Inc. | Non-compete agreement |  |  |
Business Acquisition [Line Items] |  |  |
Identified intangible assets | $ 7,340 |  |
Estimated Useful Life (in years) | 5 years |  |

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