Reportable Segments - Schedule of Gross Revenue Classified by Major Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 234,045	$ 212,558
INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	100,835	90,251
BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	70,194	59,975
GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	63,016	62,332
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	206,990	196,154
United States \| INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	100,835	90,251
United States \| BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	48,825	47,373
United States \| GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	57,330	58,530
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	27,055	16,404
Foreign \| INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	0	0
Foreign \| BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	21,369	12,602
Foreign \| GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 5,686	$ 3,802

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details

NV5 Global, Inc. 10-Q