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Intangible Assets, net - Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Cost	$ 307,900	$ 298,472
Accumulated Amortization	(226,538)	(203,705)
Net	81,362	94,767
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	36,500	36,500
Accumulated Amortization	(6,389)	(3,822)
Net	30,111	32,678
Software
Finite-Lived Intangible Assets [Line Items]
Cost	34,431	28,515
Accumulated Amortization	(13,733)	(11,483)
Net	20,698	17,032
Intangibles-in-progress
Finite-Lived Intangible Assets [Line Items]
Cost	11,945	11,863
Accumulated Amortization	0	0
Net	11,945	11,863
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	86,064	86,064
Accumulated Amortization	(76,744)	(70,270)
Net	9,320	15,794
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	87,600	87,600
Accumulated Amortization	(79,557)	(73,301)
Net	8,043	14,299
Purchased content
Finite-Lived Intangible Assets [Line Items]
Cost	51,360	47,930
Accumulated Amortization	(50,115)	(44,829)
Net	$ 1,245	$ 3,101

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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