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Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2016 | Sep. 30, 2016 | Jul. 01, 2016 | Apr. 01, 2016 | Jan. 01, 2016 | Oct. 02, 2015 | Jul. 03, 2015 | Apr. 03, 2015 | Dec. 30, 2016 | Jan. 01, 2016 | Jan. 02, 2015
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net loss | $ (166) | $ (1,778) | $ (2,143) | $ (8,041) | $ (842) | $ (1,752) | $ (1,599) | $ (2,340) | $ (12,129) | $ (6,533) | $ (8,392)
Weighted average common shares and denominator for basic and diluted calculation: |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  |  |  |  |  |  |  | 40,352 | 39,384 | 38,342
Less: Unvested restricted stock |  |  |  |  |  |  |  |  | (23) | (124) | (251)
Denominator for basic calculation |  |  |  |  |  |  |  |  | 40,329 | 39,260 | 38,091
Denominator for diluted calculation |  |  |  |  |  |  |  |  | 40,329 | 39,260 | 38,091
Weighted average effects of potentially dilutive common stock: |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net loss per share - basic and diluted (in dollars per share) | $ 0 | $ (40) | $ (50) | $ (200) | $ (20) | $ (40) | $ (40) | $ (60) | $ (0.30) | $ (0.17) | $ (0.22)
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |
Weighted average effects of potentially dilutive common stock: |  |  |  |  |  |  |  |  |  |  |
Weighted Average Number Diluted Shares Outstanding Adjustment, Total |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Weighted average effects of potentially dilutive common stock: |  |  |  |  |  |  |  |  |  |  |
Weighted Average Number Diluted Shares Outstanding Adjustment, Total |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Weighted average effects of potentially dilutive common stock: |  |  |  |  |  |  |  |  |  |  |
Weighted Average Number Diluted Shares Outstanding Adjustment, Total |  |  |  |  |  |  |  |  | 0 | 0 | 0

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1757-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Treasury Stock Method -URI http://asc.fasb.org/extlink&oid=6527216 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Call Option -URI http://asc.fasb.org/extlink&oid=6506649 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Warrant -URI http://asc.fasb.org/extlink&oid=6528364 + Details
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