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Note 9 - Goodwill and Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Balance | $ 1,436,261 | $ 1,432,384
Acquisitions of businesses, net |  | 22,641
Foreign currency translation rate changes | 36,705 | (18,764)
Purchase accounting adjustments | (5,872) |
Balance | 1,467,094 | 1,436,261
Goodwill, gross | 1,974,898 | 1,944,065
Accumulated impairment | (507,804) | (507,804)
Goodwill | 1,467,094 | 1,436,261
Domestic [Member] |  |
Balance | 1,041,147 | 1,018,528
Acquisitions of businesses, net |  | 22,641
Foreign currency translation rate changes | 112 | (22)
Purchase accounting adjustments | (6,182) |
Balance | 1,035,077 | 1,041,147
Goodwill, gross | 1,538,270 | 1,544,340
Accumulated impairment | (503,193) | (503,193)
Goodwill | 1,035,077 | 1,041,147
International [Member] |  |
Balance | 395,114 | 413,856
Acquisitions of businesses, net |  | 0
Foreign currency translation rate changes | 36,593 | (18,742)
Purchase accounting adjustments | 310 |
Balance | 432,017 | 395,114
Goodwill, gross | 436,628 | 399,725
Accumulated impairment | (4,611) | (4,611)
Goodwill | $ 432,017 | $ 395,114

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