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Business Acquisitions (Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Fiscal 2022 Acquisitions |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenues | $ 343,275 | $ 353,283 | $ 668,309 | $ 676,929
Net (loss) income from continuing operations | $ (46,300) | $ (22,941) | $ (21,543) | $ 15,778
(Loss) income per common share from continuing operations - Basic (usd per share) | $ (0.99) | $ (0.51) | $ (0.46) | $ 0.35
(Loss) income per common share from continuing operations - Diluted (usd per share) | $ (0.99) | $ (0.51) | $ (0.46) | $ 0.33
Fiscal 2021 Acquisitions |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenues |  | $ 351,172 |  | $ 680,194
Net (loss) income from continuing operations |  | $ (22,156) |  | $ 19,456
(Loss) income per common share from continuing operations - Basic (usd per share) |  | $ (0.50) |  | $ 0.44
(Loss) income per common share from continuing operations - Diluted (usd per share) |  | $ (0.50) |  | $ 0.41
SEOmoz Acquisition |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenues |  | $ 349,473 |  | $ 673,401
Net (loss) income from continuing operations |  | $ (22,247) |  | $ 18,767
(Loss) income per common share from continuing operations - Basic (usd per share) |  | $ (0.50) |  | $ 0.42
(Loss) income per common share from continuing operations - Diluted (usd per share) |  | $ (0.50) |  | $ 0.40

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