Note 11 - Operating Segment and Geographic Information (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 25, 2021 USD ($)
Assets	$ 253,005	$ 298,718	$ 251,798
Number of Major Customers	2	2	2
Number of Employees Covered Under Collective Bargaining Agreement	29
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer One [Member]
Concentration Risk, Percentage	20.00%	23.00%	21.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer Two [Member]
Concentration Risk, Percentage	11.00%	12.00%	11.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Customer One [Member]
Concentration Risk, Percentage	29.00%	28.00%
MEXICO
Assets	$ 5,300	$ 14,800

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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