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Note 3 - Revenue Recognition - Revenues Disaggregated by Revenue Source (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Revenue	$ 70,289,000	$ 60,365,000	$ 232,928,000	$ 201,468,000
Health Care [Member]
Revenue	29,999,000	26,554,000	116,104,000	101,668,000
Engineering Services [Member]
Revenue	31,414,000	24,167,000	90,078,000	70,180,000
Technology Service [Member]
Revenue	8,876,000	9,644,000	26,746,000	29,620,000
Time-and-Materials Contract [Member] | Health Care [Member]
Revenue	29,563,000	26,114,000	114,957,000	100,530,000
Time-and-Materials Contract [Member] | Engineering Services [Member]
Revenue	14,134,000	11,810,000	43,648,000	34,273,000
Time-and-Materials Contract [Member] | Technology Service [Member]
Revenue	5,977,000	7,139,000	17,891,000	23,962,000
Permanent Placement Services [Member] | Health Care [Member]
Revenue	436,000	440,000	1,147,000	1,138,000
Permanent Placement Services [Member] | Technology Service [Member]
Revenue	6,000	76,000	192,000	187,000
Fixed-Price Contract [Member] | Engineering Services [Member]
Revenue	17,280,000	12,357,000	46,430	35,907,000
Fixed-Price Contract [Member] | Technology Service [Member]
Revenue	$ 2,893,000	$ 2,429,000	$ 8,663,000	$ 5,471,000

X

- Definition

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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