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Note 9 - Goodwill and Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Balance | $ 1,432,384 | $ 1,400,880 |
Acquisitions of businesses, net | 22,641 |  | $ 6,739
Foreign currency translation rate changes | (18,764) | 24,765 |
Balance | 1,436,261 | 1,432,384 | 1,400,880
Goodwill, gross | 1,944,065 | 1,940,188 |
Accumulated impairment | (507,804) | (507,804) |
Goodwill | 1,436,261 | 1,432,384 | 1,400,880
Domestic [Member] |  |  |
Balance | 1,018,528 | 1,016,657 |
Acquisitions of businesses, net | 22,641 |  | 1,376
Foreign currency translation rate changes | (22) | 495 |
Balance | 1,041,147 | 1,018,528 | 1,016,657
Goodwill, gross | 1,544,340 | 1,521,721 |
Accumulated impairment | (503,193) | (503,193) |
Goodwill | 1,041,147 | 1,018,528 | 1,016,657
International [Member] |  |  |
Balance | 413,856 | 384,223 |
Acquisitions of businesses, net | 0 |  | 5,363
Foreign currency translation rate changes | (18,742) | 24,270 |
Balance | 395,114 | 413,856 | 384,223
Goodwill, gross | 399,725 | 418,467 |
Accumulated impairment | (4,611) | (4,611) |
Goodwill | $ 395,114 | $ 413,856 | $ 384,223

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