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Acquisitions (Estimated Useful Life and Fair Value) (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Fair Value | $ 90,830
Customer Relationships [Member] |
Weighted Average Useful Life (in years) | 17 years
Fair Value | $ 59,680
Developed Technology Rights [Member] |
Weighted Average Useful Life (in years) | 18 years
Fair Value | $ 28,920
Trademark and tradename [Member] |
Weighted Average Useful Life (in years) | 20 years
Fair Value | $ 1,570
Noncompete Agreements [Member] |
Weighted Average Useful Life (in years) | 4 years
Fair Value | $ 660

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