Customer Lists, Net - Schedule of Customer Lists, Net (Detail) - Customer lists, net - USD ($) $ in Thousands	Oct. 01, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Customer lists at cost	$ 25,288	$ 25,288
Less: Accumulated amortization	13,863	12,484
Total finite-lived intangible assets	$ 11,425	$ 12,804