Consolidated Statements of Stockholders' Equity Statement (USD $) In Thousands	Total	Common Stock [Member]	Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2011	$ 64,385	$ 36,068	$ 2,648	$ 136,670	$ (110,913)	$ (88)
Repurchases of Common Stock	(199)	(151)	0	(48)	0	0
Restricted stock grants issued	0	609	258	(867)	0	0
Restricted stock grants forfeited	0	(52)	0	52	0	0
Class B converted into Common Stock	0	48	(48)	0	0	0
Stock-based compensation expense	937	0	0	937	0	0
Excess tax benefits from stock-based compensation expense	0	0	0	0	0	0
Net income (loss)	(927)	0	0	0	(927)	0
Other comprehensive income (loss)	(150)	0	0	0	0	(150)
Stockholders' Equity Attributable to Parent at Dec. 29, 2012	64,046	36,522	2,858	136,744	(111,840)	(238)
Common Stock issued	190	151	0	39	0	0
Repurchases of Common Stock	(207)	(116)	0	(91)	0	0
Restricted stock grants issued	0	346	174	(520)	0	0
Class B converted into Common Stock	0	421	(421)	0	0	0
Stock-based compensation expense	847	0	0	847	0	0
Excess tax benefits from stock-based compensation expense	151	0	0	151	0	0
Net income (loss)	5,290	0	0	0	5,290	0
Other comprehensive income (loss)	454	0	0	0	0	454
Stockholders' Equity Attributable to Parent at Dec. 28, 2013	70,771	37,324	2,611	137,170	(106,550)	216
Common Stock issued	192	86	7	99	0	0
Common Stock issued under equity offering	24,559	7,500	0	17,059	0	0
Repurchases of Common Stock	(497)	(142)	0	(355)	0	0
Restricted stock grants issued	0	208	96	(304)	0	0
Restricted stock grants forfeited	0	(15)	(360)	375	0	0
Class B converted into Common Stock	0	61	(61)	0	0	0
Stock-based compensation expense	1,195	0	0	1,195	0	0
Excess tax benefits from stock-based compensation expense	(112)	0	0	(112)	0	0
Net income (loss)	(1,402)	0	0	0	(1,402)	0
Other comprehensive income (loss)	(1,729)	0	0	0	0	(1,729)
Stockholders' Equity Attributable to Parent at Dec. 27, 2014	$ 92,977	$ 45,022	$ 2,293	$ 155,127	$ (107,952)	$ (1,513)