Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended
Mar. 30, 2013	Mar. 31, 2012
Stock-Based Compensation (Textual) [Abstract]
Unrecognized compensation cost related to nonvested stock options, weighted-average period	3 years
Unrecognized compensation cost related to nonvested stock options	$ 400,000
Stock-Based Compensation (Additional Textual) [Abstract]
Date of plan approval	May 20, 2009
Authorized number of common stock shares for grant	2,000,000
Maximum grant period from date of plan approval	10 years
Shares available for grant under the plan	1,681,366
Compensation cost charged against income for stock options	40,000	45,000
Capitalized compensation cost	0	0
Percentage of forfeiture assumption in calculation of compensation cost	5.40%	5.40%
Intrinsic value of stock options exercised	1,200,000
Cash received from option exercises under the plan	121,000	69,000
Tax benefit generated from compensation cost and credited to additional paid in capital	500,000	100,000
Restricted stock [Member]
Stock-Based Compensation (Textual) [Abstract]
Unrecognized compensation cost related to nonvested stock options, weighted-average period	3 years 2 months 12 days
Unrecognized compensation cost related to nonvested stock options	2,400,000
Compensation cost related to restricted stock	$ 207,000	$ 192,000

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 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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