Unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Oct. 02, 2022	Jan. 02, 2022
Accounts Receivable, Allowance for Credit Loss	$ 60	$ 62
Contract assets	$ 1,459	$ 243
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000	10,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000	200,000
Common stock, shares issued (in shares)	13,110	11,863
Common stock, shares outstanding (in shares)	13,110	11,863