Earnings (Loss) Per Share (Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2022	Jun. 26, 2021	Jun. 25, 2022	Jun. 26, 2021
Basic earnings (loss) per share:
Income (Loss) from continuing operations	$ (4,019)	$ 3,763	$ (7,361)	$ 3,505
Less: Allocation of earnings to participating securities	0	(158)	0	(122)
Income (Loss) from continuing operations available to common shareholders - basic	$ (4,019)	$ 3,605	$ (7,361)	$ 3,383
Basic weighted-average shares outstanding	15,225,000	15,119,000	15,184,000	15,102,000
Basic earnings income (loss) per share - continuing operations	$ (0.26)	$ 0.24	$ (0.48)	$ 0.22
Diluted earnings income (loss) per share:
Income (Loss) from continuing operations available to common shareholders - basic	$ (4,019)	$ 3,605	$ (7,361)	$ 3,383
Add: Undistributed earnings reallocated to unvested shareholders	0	1	0	1
Income (loss) from continuing operations available to common shareholders - basic	$ (4,019)	$ 3,606	$ (7,361)	$ 3,384
Effect of dilutive securities:
Stock options	0	0	0	0
Directors' stock performance units	0	130,000	0	130,000
Diluted weighted-average shares outstanding	15,225,000	15,249,000	15,184,000	15,232,000
Diluted earnings income (loss) per share - continuing operations	$ (0.26)	$ 0.24	$ (0.48)	$ 0.22
Common shares, excluding unvested participating securities	944,000	681,000	944,000	681,000
Antidilutive securities excluded from computation of earnings per share, (in shares)	130	151,000