Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013
Earnings Per Share [Abstract]
Net income (loss)	$ (1,721)	$ (2,762)	$ (11,082)	$ (11,457)	$ (13,519)
Basic and diluted weighted average common shares outstanding	34,797,490	23,020,529	29,571,846	22,929,505
Basic and diluted net income (loss) per share	$ (0.05)	$ (0.12)	$ (0.37)	$ (0.50)
Common shares excluded from diluted net loss per share computation	9,813,285	10,066,823	9,813,285	10,066,823