Goodwill and Intangible Assets - Goodwill / Tradename (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, beginning balance	$ 152,020	$ 152,156
Goodwill, acquisitions and related adjustments	7,022
Goodwill, foreign currency translation	65	(136)
Goodwill, ending balance	159,107	152,020
Tradename, beginning balance	14,291	18,258
Tradename, transfers to finite life classification		(3,904)
Tradename, foreign currency translation	37	(63)
Tradename, ending balance	$ 14,328	$ 14,291