Note 1 - Basis of Presentation and Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Number of Operating Segments	1
Production Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Production Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Tools, Dies and Molds [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Tools, Dies and Molds [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Accounts Receivable [Member] | Arrow Electronics Inc [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	29.00%	27.00%
Accounts Receivable [Member] | Weikeng Group [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	36.00%	47.00%
Accounts Receivable [Member] | Future Group [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	18.00%	9.00%
Revenue Benchmark [Member] | Sell-through Distributors Concentration Risk [Member]
Number of Distributors	3
Revenue Benchmark [Member] | Arrow Electronics Inc [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	32.00%	28.00%	27.00%
Revenue Benchmark [Member] | Weikeng Group [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	21.00%	30.00%	37.00%
Revenue Benchmark [Member] | Future Group [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	13.00%	8.00%	6.00%