Reportable Segments - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 786,778	$ 706,706	$ 659,296
INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	395,878	383,725	352,965
BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	232,577	185,995	157,432
GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	158,323	136,986	148,899
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	754,498	684,785	647,282
United States | INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	395,878	383,725	352,965
United States | BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	204,036	167,057	147,806
United States | GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	154,584	134,003	146,511
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	32,280	21,921	12,014
Foreign | INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	0	0	0
Foreign | BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	28,541	18,938	9,626
Foreign | GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 3,739	$ 2,983	$ 2,388