Accounts Receivable (Schedule of allowance for doubtful accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Receivables [Abstract]
Balance, beginning of year	$ 889	$ 1,257
Net addition (reduction) to provision	112	(368)
Accounts receivable written off, net of recoveries	(417)	0
Balance, end of year	$ 584	$ 889