Earnings (Loss) Per Share (Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Basic earnings (loss) per share:
Loss from continuing operations		$ (1,181)	$ (1,972)	$ (7,822)	$ (4,857)
Less: Allocation of earnings to participating securities		0	0	0	0
Loss from continuing operations available to common shareholders - basic		$ (1,181)	$ (1,972)	$ (7,822)	$ (4,857)
Basic weighted-average shares outstanding (1)	[1]	15,885	15,763	15,847	15,739
Basic earnings (loss) per share - continuing operations		$ (0.07)	$ (0.13)	$ (0.49)	$ (0.31)
Diluted earnings (loss) per share:
Loss from continuing operations available to common shareholders - basic		$ (1,181)	$ (1,972)	$ (7,822)	$ (4,857)
Add: Undistributed earnings reallocated to unvested shareholders		0	0	0	0
Loss from continuing operations available to common shareholders - basic		$ (1,181)	$ (1,972)	$ (7,822)	$ (4,857)
Effect of dilutive securities:
Stock options (2)	[2]	0	0	0	0
Directors' stock performance units (2)	[2]	0	0	0	0
Diluted weighted-average shares outstanding (1)(2)	[1],[2]	15,885	15,763	15,847	15,739
Diluted earnings (loss) per share - continuing operations		$ (0.07)	$ (0.13)	$ (0.49)	$ (0.31)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		476		476
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		383	426	383	426

[1] Includes Common and Class B Common shares, excluding 476 thousand unvested participating securities

[2] Shares issuable under stock option plans where the exercise price is greater than the average market price of the Company's Common Stock during the relevant period and directors' stock performance units have been excluded to the extent they are anti-dilutive. Aggregate shares excluded for the three and six months ended June 29, 2019 and were 383 thousand and for the three and six months ended June 30, 2018 were 426 thousand.