Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Cost	$ 139,994	$ 109,246
Accumulated amortization	(20,005)	(13,892)
Net carrying amount	119,989	95,354
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Cost	128,564	102,696
Accumulated amortization	(13,153)	(7,369)
Net carrying amount	115,411	95,327
Technology and Other Intangibles [Member]
Finite Lived Intangible Assets [Line Items]
Cost	11,430	6,550
Accumulated amortization	(6,852)	(6,523)
Net carrying amount	$ 4,578	$ 27