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Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Intangible Assets [Line Items]
Gross Carrying Value	$ 408,769	$ 340,282
Gross Carrying Value	409,469	340,982
Accumulated Amortization	(69,306)	(53,882)
Accumulated Amortization	(69,306)	(53,882)
Net Carrying Value	339,463	286,400
Net Carrying Value	$ 340,163	$ 287,100
Weighted Average Useful Life (in years)	16 years	16 years
Trademark
Intangible Assets [Line Items]
Gross Carrying Value	$ 700	$ 700
Net Carrying Value	700	700
Technology - developed
Intangible Assets [Line Items]
Gross Carrying Value	141,039	114,217
Accumulated Amortization	(19,426)	(14,444)
Net Carrying Value	$ 121,613	$ 99,773
Weighted Average Useful Life (in years)	17 years	17 years
Patents
Intangible Assets [Line Items]
Gross Carrying Value	$ 240	$ 240
Accumulated Amortization	(240)	(240)
Net Carrying Value
Weighted Average Useful Life (in years)	8 years	8 years
Customer relationships
Intangible Assets [Line Items]
Gross Carrying Value	$ 257,297	$ 217,790
Accumulated Amortization	(47,363)	(37,333)
Net Carrying Value	$ 209,934	$ 180,457
Weighted Average Useful Life (in years)	15 years	16 years
Trademarks
Intangible Assets [Line Items]
Gross Carrying Value	$ 7,367	$ 5,893
Accumulated Amortization	(771)	(541)
Net Carrying Value	$ 6,596	$ 5,352
Weighted Average Useful Life (in years)	19 years	20 years
Other intangibles
Intangible Assets [Line Items]
Gross Carrying Value	$ 2,826	$ 2,142
Accumulated Amortization	(1,506)	(1,324)
Net Carrying Value	$ 1,320	$ 818
Weighted Average Useful Life (in years)	4 years	3 years

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