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Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Gross Carrying Value	$ 263,583	$ 248,683
Gross Carrying Value	264,283	249,383
Accumulated Amortization	(48,898)	(36,831)
Accumulated Amortization	(48,898)	(36,831)
Net Carrying Value	214,685	211,852
Net Carrying Value	$ 215,385	$ 212,552
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	85,196	82,169
Accumulated Amortization	(13,054)	(9,669)
Net Carrying Value	$ 72,142	$ 72,500
Weighted Average Useful Life (in years)	18 years	19 years
Patents
Intangible Assets [Line Items]
Gross Carrying Value	$ 240	$ 240
Accumulated Amortization	$ (240)	$ (240)
Weighted Average Useful Life (in years)	8 years	8 years
Customer relationships
Intangible Assets [Line Items]
Gross Carrying Value	$ 172,325	$ 160,825
Accumulated Amortization	(33,861)	(25,642)
Net Carrying Value	$ 138,464	$ 135,183
Weighted Average Useful Life (in years)	15 years	15 years
Trademark
Intangible Assets [Line Items]
Gross Carrying Value	$ 4,072	$ 3,752
Accumulated Amortization	(480)	(333)
Net Carrying Value	$ 3,592	$ 3,419
Weighted Average Useful Life (in years)	19 years	20 years
Other intangibles
Intangible Assets [Line Items]
Gross Carrying Value	$ 1,750	$ 1,697
Accumulated Amortization	(1,263)	(947)
Net Carrying Value	$ 487	$ 750
Weighted Average Useful Life (in years)	3 years	3 years

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