Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

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- Definition

The amount of plan compensation cost recognized during the period.

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-Name Statement of Position (SOP)

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
Stock-Based Compensation (Narrative) (Details) (USD $)	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012	Dec. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average estimated fair value, options	$ 1.30	$ 1.94	$ 1.30	$ 1.82
Fair value of unvested stock options	$ 1,600,000		$ 1,600,000
Closing stock price	$ 2.21		$ 2.21
The total intrinsic value of options exercised			28,000	152,000
Total cash received from employees as a result of employee stock option exercises			47,000	273,000
Stock-based compensation	285,000	434,000	737,000	818,000
Weighted average estimated fair value	$ 2.29		$ 2.29		$ 2.30
Compensation expense related to ESPP	50,000
Unrecognized stock-based compensation expense	73,000		73,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	259,000		590,000
Weighted average recognition period of unrecognized stock-based compensation expense			2 years 2 months 23 days
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation			2,000
Performance Restricted Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation			(26,000)
Unrecognized stock-based compensation expense	$ 33,000		$ 33,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average estimated fair value	$ 0.59	$ 1.15	$ 0.59	$ 1.15
Shares available for issuance	1,300,000		1,300,000
Weighted average recognition period of unrecognized stock-based compensation expense			4 months 18 days