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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (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.

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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.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends.

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Basic and Diluted Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 02, 2015	Oct. 02, 2014	Jul. 02, 2014	Apr. 02, 2014	Jan. 02, 2014	Oct. 03, 2013	Jul. 03, 2013	Apr. 03, 2013	Jan. 02, 2015	Jan. 03, 2014	Dec. 28, 2012
Numerator:
Net income (loss)	$ (2,538)us-gaap_NetIncomeLoss	$ (2,706)us-gaap_NetIncomeLoss	$ (1,789)us-gaap_NetIncomeLoss	$ (1,359)us-gaap_NetIncomeLoss	$ (876)us-gaap_NetIncomeLoss	$ 525us-gaap_NetIncomeLoss	$ 278us-gaap_NetIncomeLoss	$ 471us-gaap_NetIncomeLoss	$ (8,392)us-gaap_NetIncomeLoss	$ 398us-gaap_NetIncomeLoss	$ (1,763)us-gaap_NetIncomeLoss
Weighted average common shares and denominator for basic calculation:
Weighted average common shares outstanding									38,342	37,017	36,433
Less: Unvested restricted stock									(251)	(311)	(180)
Denominator for basic calculation									38,091	36,706	36,253
Weighted average effects of dilutive equity-based compensation awards:
Warrants									0	414	0
Denominator for diluted calculation									38,091	38,607	36,253
Net income (loss) per share - basic (in dollars per share)	$ (0.07)us-gaap_EarningsPerShareBasic	$ (0.07)us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic	$ (0.04)us-gaap_EarningsPerShareBasic	$ (0.02)us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ (0.22)us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic
Net income (loss) per share - diluted (in dollars per share)	$ (0.07)us-gaap_EarningsPerShareDiluted	$ (0.07)us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted	$ (0.04)us-gaap_EarningsPerShareDiluted	$ (0.02)us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ (0.22)us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted
Employee Stock Option [Member]
Weighted average effects of dilutive equity-based compensation awards:
Employee stock options and restricted stock											0
Weighted Average Number Diluted Shares Outstanding Adjustment, Total									0	1,235
Restricted Stock [Member]
Weighted average effects of dilutive equity-based compensation awards:
Weighted Average Number Diluted Shares Outstanding Adjustment, Total									0	177	0
Restricted Stock Units (RSUs) [Member]
Weighted average effects of dilutive equity-based compensation awards:
Weighted Average Number Diluted Shares Outstanding Adjustment, Total									0	75	0