Common Stock and Earnings (Loss) Per Share (Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Basic earnings (loss) per share:
Loss from continuing operations	$ (1,952)	$ (33,415)
Less: Allocation of earnings to participating securities	0	0
Loss from continuing operations available to common shareholders - basic	$ (1,952)	$ (33,415)
Basic weighted-average shares outstanding (in shares)	14,783	15,121
Basic earnings (loss) per share - continuing operations (in dollars per share)	$ (0.13)	$ (2.21)
Diluted earnings (loss) per share:
Loss from continuing operations available to common shareholders - basic	$ (1,952)	$ (33,415)
Add: Undistributed earnings reallocated to unvested shareholders	0	0
Loss from continuing operations available to common shareholders - basic	$ (1,952)	$ (33,415)
Basic weighted-average shares outstanding (in shares)	14,783	15,121
Effect of dilutive securities:
Stock options	0	0
Directors' stock performance units	0	0
Diluted weighted-average shares outstanding	14,783	15,121
Diluted earnings (loss) per share - continuing operations (in dollars per share)	$ (0.13)	$ (2.21)
Antidilutive securities excluded from computation of earnings per share, amount (in dollars per share)	549	130
Common Class B
Effect of dilutive securities:
Shares outstanding at the beginning (in shares)	706	944