Common Stock and Earnings (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2013		Sep. 29, 2012		Sep. 28, 2013		Sep. 29, 2012
Basic earnings (loss) per share:
Income (loss) from continuing operations	$ 1,432		$ 269		$ 3,761		$ (240)
Less: Allocation of earnings to participating securities	(57)		(10)		(149)		0
Income (loss) from continuing operations available to common shareholders - basic	1,375		259		3,612		(240)
Basic weighted-average shares outstanding (1)	12,760	[1]	12,650	[1]	12,722	[1]	12,630	[1]
Basic earnings (loss) per share - continuing operations	$ 0.11		$ 0.02		$ 0.28		$ (0.02)
Diluted earnings (loss) per share:
Income (loss) from continuing operations available to common shareholders - basic	1,375		259		3,612		(240)
Add: Undistributed earnings reallocated to unvested shareholders	1		0		1		0
Income (loss) from continuing operations available to common shareholders - basic	$ 1,376		$ 259		$ 3,613		$ (240)
Effect of dilutive securities:
Stock options (2)	77	[2]	0	[2]	45	[2]	0	[2]
Directors' stock performance units (2)	62	[2]	63	[2]	61	[2]	0	[2]
Diluted weighted-average shares outstanding (1)(2)	12,899	[1],[2]	12,713	[1],[2]	12,828	[1],[2]	12,630	[1],[2]
Diluted earnings (loss) per share - continuing operations	$ 0.11		$ 0.02		$ 0.28		$ (0.02)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	450		766		530		836

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

[2] Because their effects are anti-dilutive, shares issuable under stock option plans where the exercise price is greater than the average market price of the Company's Common Stock at the end of the relevant period and directors' stock performance units have been excluded. Aggregate shares excluded for the three and nine months ending September 28, 2013 were 450 and 530, respectively and for the three and nine months ending September 29, 2012 were 766 and 836, respectively.