Note 11 - Stock-Based Compensation Plans - Assumptions Used at Grant Date In the Valuation of RUSs (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Weighted average expected volatility	51.44%
Weighted average risk-free interest rate	1.67%
Expected term (in months) (Year)	3 years		3 years
Minimum [Member]
Weighted average expected volatility		50.37%	42.38%
Weighted average risk-free interest rate		0.22%	1.40%
Expected term (in months) (Year)		3 years
Maximum [Member]
Weighted average expected volatility		52.11%
Weighted average risk-free interest rate		0.77%
Expected term (in months) (Year)		5 years