Income Taxes	6 Months Ended
Jun. 27, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The benefit from income taxes for the second quarter of 2015 and 2014 was approximately $2.7 million and $14.3 million, respectively. The benefit from income taxes for the first half of 2015 and 2014 was approximately $8.3 million and $17.3 million, respectively. The effective income tax rate of a benefit of approximately 33.9% for the first half of 2015 differs from the United States federal statutory rate of 35% principally as a result of the impact of lower foreign tax rates and losses in certain jurisdictions that cannot be benefited, partially offset by non-deductible expenses. The effective income tax rate of a benefit of approximately 24.0% for the first half of 2014 differs from the United States federal statutory rate of 35% principally as a result of non-deductible goodwill impairment, U.S. tax on unremitted earnings, losses in certain jurisdictions that cannot be benefited, and uncertain tax positions, partially offset by the impact of foreign rates. At June 27, 2015, the Company has approximately $5.4 million of remaining tax benefits related to the excess of tax deductible stock compensation expense over the related book expense. This amount will be recognized as a credit to additional paid in capital when the benefits are realized on a tax return. The Company accounts for excess share-based compensation deductions on the basis that these are the last tax benefits that are utilized. As of January 1, 2015, the Company had a liability of approximately $18.3 million for unrecognized tax benefits related to various federal, foreign and state income tax matters. As a result of additional provisions during the first half of 2015, the liability for uncertain tax positions increased to approximately $19.0 million at June 27, 2015. The liability for uncertain tax positions is included in other long-term liabilities on the accompanying unaudited condensed consolidated balance sheet. The corresponding amount of gross uncertain tax benefits was approximately $24.9 million and $24.2 million at June 27, 2015 and December 31, 2014, respectively. The difference between the total unrecognized tax benefits and the amount of the liability for unrecognized tax benefits represents unrecognized tax benefits that have been netted against deferred tax assets in accordance with ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. As of June 27, 2015 and December 31, 2014, the amount of unrecognized tax benefits that, if recognized, would affect the Company's effective tax rate was approximately $11.8 million and $11.3 million, respectively. The difference between the total amount of uncertain tax positions and the amount that would affect the effective tax rate represents the federal tax effect of state tax items, and items that offset temporary differences. As of June 27, 2015, the Company had approximately $0.9 million in unrecognized benefits relating to various tax issues, for which the statute of limitations is expected to expire in the fourth quarter of 2015. As of June 27, 2015 and December 31, 2014, the total amount of accrued interest and penalties related to uncertain tax positions was approximately $4.5 million and $4.1 million, respectively. The Company accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state taxes.

Income Taxes

The benefit from income taxes for the second quarter of 2015 and 2014 was approximately $2.7 million and $14.3 million, respectively. The benefit from income taxes for the first half of 2015 and 2014 was approximately $8.3 million and $17.3 million, respectively. The effective income tax rate of a benefit of approximately 33.9% for the first half of 2015 differs from the United States federal statutory rate of 35% principally as a result of the impact of lower foreign tax rates and losses in certain jurisdictions that cannot be benefited, partially offset by non-deductible expenses. The effective income tax rate of a benefit of approximately 24.0% for the first half of 2014 differs from the United States federal statutory rate of 35% principally as a result of non-deductible goodwill impairment, U.S. tax on unremitted earnings, losses in certain jurisdictions that cannot be benefited, and uncertain tax positions, partially offset by the impact of foreign rates.

At June 27, 2015, the Company has approximately $5.4 million of remaining tax benefits related to the excess of tax deductible stock compensation expense over the related book expense. This amount will be recognized as a credit to additional paid in capital when the benefits are realized on a tax return. The Company accounts for excess share-based compensation deductions on the basis that these are the last tax benefits that are utilized.

As of January 1, 2015, the Company had a liability of approximately $18.3 million for unrecognized tax benefits related to various federal, foreign and state income tax matters. As a result of additional provisions during the first half of 2015, the liability for uncertain tax positions increased to approximately $19.0 million at June 27, 2015. The liability for uncertain tax positions is included in other long-term liabilities on the accompanying unaudited condensed consolidated balance sheet. The corresponding amount of gross uncertain tax benefits was approximately $24.9 million and $24.2 million at June 27, 2015 and December 31, 2014, respectively. The difference between the total unrecognized tax benefits and the amount of the liability for unrecognized tax benefits represents unrecognized tax benefits that have been netted against deferred tax assets in accordance with ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.

As of June 27, 2015 and December 31, 2014, the amount of unrecognized tax benefits that, if recognized, would affect the Company's effective tax rate was approximately $11.8 million and $11.3 million, respectively. The difference between the total amount of uncertain tax positions and the amount that would affect the effective tax rate represents the federal tax effect of state tax items, and items that offset temporary differences.

As of June 27, 2015, the Company had approximately $0.9 million in unrecognized benefits relating to various tax issues, for which the statute of limitations is expected to expire in the fourth quarter of 2015.

As of June 27, 2015 and December 31, 2014, the total amount of accrued interest and penalties related to uncertain tax positions was approximately $4.5 million and $4.1 million, respectively. The Company accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state taxes.