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Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Revenue	$ 278,380	$ 263,237
Health Care [Member]
Revenue	142,679	136,241
Health Care [Member] | Time-and-Materials Contract [Member]
Revenue	141,185	134,941
Health Care [Member] | Permanent Placement Services [Member]
Revenue	1,494	1,300
Engineering Services [Member]
Revenue	96,459	84,675
Engineering Services [Member] | Time-and-Materials Contract [Member]
Revenue	47,157	42,443
Engineering Services [Member] | Permanent Placement Services [Member]
Revenue	0	0
Engineering Services [Member] | Fixed-Price Contract [Member]
Revenue	49,302	42,232
Technology Service [Member]
Revenue	39,242	42,321
Technology Service [Member] | Time-and-Materials Contract [Member]
Revenue	30,547	35,368
Technology Service [Member] | Permanent Placement Services [Member]
Revenue	243	402
Technology Service [Member] | Fixed-Price Contract [Member]
Revenue	$ 8,452	$ 6,551

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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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