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Goodwill and Other Intangible Assets, Net - Components of Other Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | $ 348,829 | $ 347,163
Accumulated Amortization | 149,231 | 141,984
Net definite life intangible assets | $ 199,598 | $ 205,179
Weighted-Average Remaining Life | 9 years 8 months 12 days | 9 years 10 months 24 days
Total indefinite life intangible assets | $ 81,973 | $ 81,978
Total definite and indefinite life intangible assets, gross, excluding goodwill | 430,802 | 429,141
Total definite and indefinite life intangible assets, net, excluding goodwill | 281,571 | 287,157
Trade Names [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total indefinite life intangible assets | 79,570 | 79,570
Licenses [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total indefinite life intangible assets | 2,403 | 2,408
Customer-Related Intangible Assets [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | 252,743 | 252,241
Accumulated Amortization | 82,068 | 77,106
Net definite life intangible assets | $ 170,675 | $ 175,135
Weighted-Average Remaining Life | 10 years 2 months 12 days | 10 years 4 months 24 days
Technology [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | $ 24,025 | $ 24,025
Accumulated Amortization | 20,887 | 20,031
Net definite life intangible assets | $ 3,138 | $ 3,994
Weighted-Average Remaining Life | 10 months 24 days | 1 year 2 months 12 days
Noncompete Agreements [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | $ 30,816 | $ 30,715
Accumulated Amortization | 29,745 | 29,596
Net definite life intangible assets | $ 1,071 | $ 1,119
Weighted-Average Remaining Life | 5 years 8 months 12 days | 5 years 10 months 24 days
Patents [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | $ 10,616 | $ 10,616
Accumulated Amortization | 10,228 | 10,223
Net definite life intangible assets | $ 388 | $ 393
Weighted-Average Remaining Life | 1 year 6 months | 1 year 7 months 6 days
All Other [Member] |  |
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Total gross definite life intangible assets | $ 30,629 | $ 29,566
Accumulated Amortization | 6,303 | 5,028
Net definite life intangible assets | $ 24,326 | $ 24,538
Weighted-Average Remaining Life | 7 years 10 months 24 days | 8 years 3 months 18 days

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