Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 58,702	$ 84,678
Accumulated Amortization	(34,645)	(54,591)
Net Carrying Amount	24,057	30,087
Customer Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,800	28,000
Accumulated Amortization	(686)	(26,757)
Net Carrying Amount	1,114	1,243
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	55,772	55,772
Accumulated Amortization	(33,580)	(27,515)
Net Carrying Amount	22,192	28,257
Internal Use Software
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,130	906
Accumulated Amortization	(379)	(319)
Net Carrying Amount	$ 751	$ 587