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Shelf Registration Statement	12 Months Ended
Shelf Registration Statement	Dec. 28, 2014
Shelf Registration Statement [Abstract]
Shelf Registration Statement	SHELF REGISTRATION STATEMENT On July 31, 2013, the Company filed a shelf registration statement on Form S-3 under which the Company may, from time to time, sell securities in one or more offerings up to a total dollar amount of $40.0 million. The Company's shelf registration statement was declared effective on August 30, 2013 and expires in August 2016. In November 2013, the Company received net proceeds of $23.1 million, net of underwriter's commission and other expenses of $2.2 million, by issuing an aggregate of 8,740,000 shares of Common Stock, $0.001 par value in an underwritten public offering at a price of $2.90 per share. As of December 28, 2014, the remaining balance on the shelf was approximately $14.7 million.