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. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Basic earnings (loss) per share:
Income (loss) from continuing operations		$ 1,615	$ 516	$ (3,142)	$ (1,864)
Less: Allocation of earnings to participating securities		(49)	(13)	0	0
Income (loss) from continuing operations available to common shareholders - basic		$ 1,566	$ 503	$ (3,142)	$ (1,864)
Basic weighted-average shares outstanding (1)	[1]	15,645	15,546	15,623	15,490
Basic earnings (loss) per share - continuing operations		$ 0.10	$ 0.03	$ (0.20)	$ (0.12)
Diluted earnings (loss) per share:
Income (loss) from continuing operations available to common shareholders - basic		$ 1,566	$ 503	$ (3,142)	$ (1,864)
Add: Undistributed earnings reallocated to unvested shareholders		1	1	0	0
Income (loss) from continuing operations available to common shareholders - basic		$ 1,567	$ 504	$ (3,142)	$ (1,864)
Effect of dilutive securities:
Stock options (2)	[2]	0	37	0	0
Directors' stock performance units (2)	[2]	138	73	0	0
Diluted weighted-average shares outstanding (1)(2)	[1],[2]	15,783	15,656	15,623	15,490
Diluted earnings (loss) per share - continuing operations		$ 0.10	$ 0.03	$ (0.20)	$ (0.12)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		104	236	207	352

[1] Includes Common and Class B Common shares, in thousands.

[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 25, 2016 were 104 and 207, respectively, and for the three and six months ended June 27, 2015 were 236 and 352, respectively.