Goodwill and Intangible Assets - Summary Of Amortization Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	$ 144	$ 240
Cost of Revenues [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	111	167
Operating Expense [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	$ 33	$ 73