Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 29, 2013	Mar. 30, 2012
Anitdilutive Securities Excluded From Earnings Per Share [Abstract]
Time-vested stock options, restricted stock and restricted stock units	532,000	1,209,000
Performance-vested stock options and restricted stock units	595,000	552,000
Convertible Note Shares Included In Diluted Share Calculation	0	0
EARNINGS PER SHARE (EPS) [Abstract]
Basic EPS	$ 0.24	$ 0.19
Diluted EPS	$ 0.23	$ 0.19
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]
Net income (loss)	$ 5,663	$ 4,467
Net Income (Loss) Available to Common Stockholders, Diluted	$ 5,663	$ 4,467
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic	23,750,000	23,420,000
Effect of dilutive securities convertible subordinated notes	0	0
Effect of dilutive securities stock optons, restricted stock and restricted stock units	665,000	428,000
Denominator for diluted EPS	24,415,000	23,848,000

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Performance-Based Vesting Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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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 share based payment arrangements 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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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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