Summary of Gross Carrying Amount and Accumulated Amortization for Intangible Assets Resulting from Acquisitions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 25,635	$ 23,939
Accumulated amortization	(15,531)	(12,959)
Intangible assets, net	$ 10,104	10,980
Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	4 years
Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	12 years
Trademarks
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	5 years
Gross carrying amount	$ 763	600
Accumulated amortization	(229)	(77)
Intangible assets, net	534	523
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	9,109	8,300
Accumulated amortization	(4,873)	(3,978)
Intangible assets, net	$ 4,236	4,322
Developed Technology | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	10 years
Developed Technology | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	12 years
Customer Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 15,763	15,039
Accumulated amortization	(10,429)	(8,904)
Intangible assets, net	$ 5,334	$ 6,135
Customer Relationships | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	4 years
Customer Relationships | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Amortization period (in years)	12 years