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Stock Based Compensation (Details Textual) (USD $)	1 Months Ended			3 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	May 31, 2011	Mar. 30, 2013	Mar. 31, 2012
Stock Based Compensation (Additional Textual) [Abstract]
Weighted-average grant date fair value of the options granted				$ 3.05	$ 2.88
Dividend yield				0.00%	0.00%
Stock-based compensation expense capitalized into inventory				$ 11,000	$ 9,000
Total intrinsic value of options exercised				259,000	127,000
Total unrecognized compensation cost, net of expected forfeitures, related to non-vested share-based compensation arrangements under the Incentive Plan				1,300,000
Compensation cost recognition, weighted average period (years)				3 years 2 months 23 days
Weighted-average grant date fair value of restricted stock units granted				$ 4.45
Weighted grant date fair value of restricted stock units granted				258,000
Period consider for calculation of average stock price performance prior awards vesting				2 months
Period consider for calculation of average stock price performance after awards vesting				2 months
Stock repurchase program authorized amount	3,000,000	4,000,000	2,000,000
Stock repurchase paid				12 months
Stock repurchase, shares				9,921
Shares repurchased price, per share				$ 4.60
Common shares under the stock repurchase program				$ 2,900,000
Restricted Stock Units [Member]
Stock Based Compensation (Textual) [Abstract]
Restricted stock units granted				220,000
Restricted stock vested during the period				0
Restricted stock forfeited during the period				0
Restricted Stock Awards [Member]
Stock Based Compensation (Textual) [Abstract]
Restricted stock units granted				0
Restricted stock vested during the period				0
Restricted stock forfeited during the period				0

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Share based compensation arrangement by share based payment award equity instruments other than options non vested grant date fair value.

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

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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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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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