Stock-Based Compensation (Details Textual) (USD $)	9 Months Ended
Sep. 29, 2012	Sep. 24, 2011	May 20, 2009
Stock Based Compensation (Textual) [Abstract]
Granted restricted stock	10,000
Unrecognized compensation cost related to nonvested stock options	$ 500,000
Unrecognized compensation cost related to nonvested stock options, weighted-average period	3 years 3 months 18 days
Stock Based Compensation (Additional Textual) [Abstract]
Authorized number of common stock shares for grant			2,000,000
Maximum grant period from date of plan approval	10 years
Date of plan approval	May 20, 2009
Shares available for grant under the plan	1,676,200
Compensation cost charged against income for stock options	151,000	188,000
Percentage of forfeiture assumption in calculation of compensation cost	5.40%	5.40%
Granted stock options	20,000
Intrinsic value of stock options exercised	6,800,000
Cash received from option exercises under the plan	1,388,000	569,000
Tax benefit generated from options exercised credited to additional paid in capital	2,400,000
Capitalized compensation cost	0	0
Restricted stock [Member]
Stock Based Compensation (Textual) [Abstract]
Granted restricted stock	10,000
Compensation cost related to restricted stock	599,000	267,000
Unrecognized compensation cost related to nonvested stock options	$ 2,700,000
Unrecognized compensation cost related to nonvested stock options, weighted-average period	3 years 6 months

Date of plan approval.

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Maximum grant period from date of plan approval.

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Percentage of forfeiture assumption in calculation of compensation cost.

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No definition available.

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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.

+ References

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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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Amount of excess tax benefit (tax deficiency) that arises when compensation cost from non-qualified share-based compensation recognized on the entity's tax return exceeds (is less than) compensation cost from equity-based compensation recognized in financial statements. Excess tax benefit (tax deficiency) increases (decreases) net cash provided by financing activities.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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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 maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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Gross number of share options (or share units) granted during the period.

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