Income Taxes (Details Textual) (USD $)	3 Months Ended	9 Months Ended
Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010
Income Taxes (Textual) [Abstract]
Income tax expense	$ (9,019,000)	$ (7,244,000)	$ (28,164,000)	$ (16,885,000)
Effective income tax rate on income from continuing operations before taxes	22.30%		24.20%
Applicable statutory United States tax rate			35.00%
Tax benefits due to reduction of deferred tax asset valuation allowances			4,700,000
Tax benefits due to the reduction of uncertain tax positions			1,900,000
Income tax final settlement of foreign tax audit				$ 1,900,000

Income Taxes.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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-Glossary Income Tax Expense (or Benefit)

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in all income tax contingencies, whether recorded or adjusted, during the period.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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