Income Taxes	9 Months Ended
Oct. 01, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The income tax provision is calculated using an estimated annual effective tax rate, based upon expected annual income, permanent items, statutory rates and planned tax strategies in the various jurisdictions in which the Company operates. However, losses in certain jurisdictions and discrete items, such as the resolution of uncertain tax positions, are treated separately. The Company’s effective income tax rate for the third quarter and first nine months of 2017 was 15.6% and 19.7%, respectively. The Company’s effective income tax rate for the third quarter and first nine months of 2016 was 16.7% and 23.9% respectively. The third quarter and first nine months of 2017 includes net discrete income tax benefits of $9.9 million and $15.9 million, respectively. Excluding net discrete income tax items in both 2017 periods, the effective tax rates would have been 27.7% for both the third quarter and first nine months of 2017. The 2017 first nine months net discrete tax benefits includes a $7.7 million income tax benefit as a result of the remeasurement of uncertain tax positions due to expiration of statute of limitation, of which $7.4 million was recorded in the third quarter of 2017. The first nine months of 2017 also includes an $8.5 million income tax benefit related to the release of valuation allowance for which the deferred tax assets are now determined more-likely-than-not to be realizable, of which $0.4 million was recorded in the third quarter. The first nine months of 2017 includes a $4.6 million income tax expense related to adjustments for uncertain tax positions. The 2017 third quarter and first nine months net discrete tax benefits also includes $2.3 million and $5.1 million, respectively, related to share-based accounting. The third quarter and first nine months of 2016 included net discrete income tax benefits of $6.6 million and $1.5 million, respectively. The first nine months of 2016 reflected $6.7 million in income tax expense related to the $17.9 million gain on the sale of a former operating facility. The 2016 third quarter and first nine months also included $4.0 million and $5.8 million, respectively, in net discrete tax benefits related to share-based accounting. Excluding net discrete income tax items in both 2016 periods, and the gain and related taxes on the facility sale in 2016, the effective tax rates would have been 27.2% for the third quarter and 27.4% for the first nine months of 2016.

Income Taxes

The income tax provision is calculated using an estimated annual effective tax rate, based upon expected annual income, permanent items, statutory rates and planned tax strategies in the various jurisdictions in which the Company operates. However, losses in certain jurisdictions and discrete items, such as the resolution of uncertain tax positions, are treated separately.

The Company’s effective income tax rate for the third quarter and first nine months of 2017 was 15.6% and 19.7%, respectively. The Company’s effective income tax rate for the third quarter and first nine months of 2016 was 16.7% and 23.9% respectively. The third quarter and first nine months of 2017 includes net discrete income tax benefits of $9.9 million and $15.9 million, respectively. Excluding net discrete income tax items in both 2017 periods, the effective tax rates would have been 27.7% for both the third quarter and first nine months of 2017. The 2017 first nine months net discrete tax benefits includes a $7.7 million income tax benefit as a result of the remeasurement of uncertain tax positions due to expiration of statute of limitation, of which $7.4 million was recorded in the third quarter of 2017. The first nine months of 2017 also includes an $8.5 million income tax benefit related to the release of valuation allowance for which the deferred tax assets are now determined more-likely-than-not to be realizable, of which $0.4 million was recorded in the third quarter. The first nine months of 2017 includes a $4.6 million income tax expense related to adjustments for uncertain tax positions. The 2017 third quarter and first nine months net discrete tax benefits also includes $2.3 million and $5.1 million, respectively, related to share-based accounting. The third quarter and first nine months of 2016 included net discrete income tax benefits of $6.6 million and $1.5 million, respectively. The first nine months of 2016 reflected $6.7 million in income tax expense related to the $17.9 million gain on the sale of a former operating facility. The 2016 third quarter and first nine months also included $4.0 million and $5.8 million, respectively, in net discrete tax benefits related to share-based accounting. Excluding net discrete income tax items in both 2016 periods, and the gain and related taxes on the facility sale in 2016, the effective tax rates would have been 27.2% for the third quarter and 27.4% for the first nine months of 2016.