Property and Equipment, net (Details) - USD ($) $ in Thousands	Apr. 02, 2022	Jan. 01, 2022
Property, Plant and Equipment [Line Items]
Total	$ 71,446	$ 65,208
Less: accumulated depreciation	(35,149)	(32,479)
Property and equipment, net	36,297	32,729
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total	3,333	3,314
Computer equipment
Property, Plant and Equipment [Line Items]
Total	21,808	20,063
Survey and field equipment
Property, Plant and Equipment [Line Items]
Total	39,879	35,436
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	$ 6,426	$ 6,395