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Acquisitions, Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Nov. 30, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | $ 454,382 | $ 454,728 |  | $ 454,382 |
Payment of holdbacks |  |  |  |  | 2,792 | $ 0
Schaudt | Subsequent Event |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of interests acquired | 100.00% |  |  |  |  |
Purchase price | $ 30,000 |  |  |  |  |
Ranch Hand | Subsequent Event |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of interests acquired | 100.00% |  |  |  |  |
Purchase price | $ 57,400 |  |  |  |  |
Contingent consideration maximum | $ 3,000 |  |  |  |  |
Wolfpack |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price |  | 2,800 |  |  |  |
Goodwill |  | $ 2,000 |  |  | 2,000 |
Veada |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of interests acquired |  |  | 100.00% |  |  |
Purchase price |  |  | $ 69,000 |  |  |
Consideration, holdback payment liability |  |  | $ 12,200 |  |  |
Consideration, holdback payment liability, term |  |  | 2 years |  |  |
Payment of holdbacks |  |  |  |  | 2,300 |
Veada | Other Current Liabilities |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration, holdback payment liability |  |  |  |  | 8,200 |
Veada | Other Noncurrent Liabilities |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration, holdback payment liability |  |  |  |  | 1,800 |
Challenger |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price |  |  |  | $ 35,000 |  |
Consideration, holdback payment liability |  |  |  | $ 4,500 |  |
Consideration, holdback payment liability, term |  |  |  | 2 years |  |
Challenger | Other Current Liabilities |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration, holdback payment liability |  |  |  |  | 3,500 |
Challenger | Other Noncurrent Liabilities |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration, holdback payment liability |  |  |  |  | $ 1,000 |

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