Consolidated Statements of Stockholders' Equity (USD $)		Common Stock [Member]	Additional Paid In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Total
Balance at Jan. 02, 2012		$ 132,000	$ 284,144,000	$ (1,198,000)	$ (277,560,000)	$ 5,518,000
Balance (in shares) at Jan. 02, 2012		13,241,841		59,886
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs	[1]	50,000	12,509,000			12,559,000
Issuance of common stock, net of issuance costs (in shares)	[1]	4,915,461
Issuance of restricted stock, net of forfeitures		1,000	(1,000)			0
Issuance of restricted stock, net of forfeitures (in shares)		120,890
Stock-based compensation			399,000			399,000
Net loss					(4,441,000)	(4,441,000)
Balance at Dec. 31, 2012		183,000	297,051,000	(1,198,000)	(282,001,000)	14,035,000
Balance (in shares) at Dec. 31, 2012		18,278,192		59,886
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Forfeiture of restricted stock		(2,000)	2,000			0
Forfeiture of restricted stock (in shares)		(171,213)
Stock-based compensation			128,000			128,000
Net loss					(11,444,000)	(11,444,000)
Balance at Dec. 30, 2013		181,000	297,181,000	(1,198,000)	(293,445,000)	2,719,000
Balance (in shares) at Dec. 30, 2013		18,106,979		59,886
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs	[2]	172,000	24,014,000			24,186,000
Issuance of common stock, net of issuance costs (in shares)	[2]	17,222,942
Issuance of restricted stock, net of forfeitures		14,000	(14,000)			0
Issuance of restricted stock, net of forfeitures (in shares)		1,433,170
Stock-based compensation		0	509,000			509,000
Share-based compensation (in shares)		0
Issuance of warrants	[3]	0	1,571,000			1,571,000
Exercise of warrants to purchase common stock	[4]	16,000	(5,000)			11,000
Exercise of warrants to purchase common stock (in shares)	[4]	1,647,105
Net loss					(16,625,000)	(16,625,000)
Balance at Dec. 29, 2014		$ 383,000	$ 323,256,000	$ (1,198,000)	$ (310,070,000)	$ 12,371,000
Balance (in shares) at Dec. 29, 2014		38,410,196		59,886

[1] Represents the proceeds, net of issuance costs, of approximately $221,000 from the shareholder rights offering and related private placement to directors and officers of the Company, completed in July 2012

[2] Represents the proceeds from the shareholder rights offering of approximately 13.3 million of unregistered shares completed December 23, 2014 and proceeds from Stock Purchase Agreement for the purchase of approximately 3.9 million unregistered shares completed on August 22, 2014.

[3] Represents the relative value of proceeds from issuance of Senior Secured Promissory Notes and related stock warrants for MILFAM II L.P. and AB Opportunity Fund LLC & AB Value Partners L.P, of $1,027,000 and $544,000 respectively, as of the issuance date.

[4] Represents proceeds relating to exercising of warrants to purchase 1.1 million and .5 million shares of unregistered common stock on September 16, 2014 and October 14, 2014, respectively.