Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The income tax provision (benefit) for the three months ended March 31, 2019 and April 1, 2018, was $2.2 million, or an effective tax rate of 14.7%, and $(86) thousand, or an effective tax rate of (9.2)%, respectively. The increase in the effective tax rate for the three months ended March 31, 2019, compared to the three months ended April 1, 2018, resulted primarily from higher pre-tax earnings compared to the three months ended April 1, 2018. The effective tax rate for the period ended March 31, 2019 included a one-time benefit related to the closing of the French tax audit whereas the period ended April 1, 2018 included benefits from stock based compensation transactions accounted for as discrete benefits during the period. The Company is subject to income taxes in the U.S. and numerous foreign jurisdictions. The future foreign tax rate could be affected by changes in the composition in earnings in countries with tax rates differing from the U.S. federal rate. The Company is under examination in various U.S. and foreign jurisdictions. The Company files income tax returns in the U.S. federal jurisdiction as well as various state, local, and foreign jurisdictions. Due to the uncertain nature of ongoing tax audits, the Company has recorded its liability for uncertain tax positions as part of its long-term liability as payments cannot be anticipated over the next twelve months. The existing tax positions of the Company continue to generate an increase in the liability for uncertain tax positions. The liability for uncertain tax positions may be reduced for liabilities that are settled with taxing authorities or on which the statute of limitations could expire without assessment from tax authorities. The possible reduction in liabilities for uncertain tax positions resulting from the expiration of statutes of limitation in multiple jurisdictions in the next twelve months is approximately $0.8 million, excluding the interest, penalties and the effect of any related deferred tax assets or liabilities.

Income Taxes

The income tax provision (benefit) for the three months ended March 31, 2019 and April 1, 2018, was $2.2 million, or an effective tax rate of 14.7%, and $(86) thousand, or an effective tax rate of (9.2)%, respectively. The increase in the effective tax rate for the three months ended March 31, 2019, compared to the three months ended April 1, 2018, resulted primarily from higher pre-tax earnings compared to the three months ended April 1, 2018. The effective tax rate for the period ended March 31, 2019 included a one-time benefit related to the closing of the French tax audit whereas the period ended April 1, 2018 included benefits from stock based compensation transactions accounted for as discrete benefits during the period.

The Company is subject to income taxes in the U.S. and numerous foreign jurisdictions. The future foreign tax rate could be affected by changes in the composition in earnings in countries with tax rates differing from the U.S. federal rate. The Company is under examination in various U.S. and foreign jurisdictions.

The Company files income tax returns in the U.S. federal jurisdiction as well as various state, local, and foreign jurisdictions. Due to the uncertain nature of ongoing tax audits, the Company has recorded its liability for uncertain tax positions as part of its long-term liability as payments cannot be anticipated over the next twelve months. The existing tax positions of the Company continue to generate an increase in the liability for uncertain tax positions. The liability for uncertain tax positions may be reduced for liabilities that are settled with taxing authorities or on which the statute of limitations could expire without assessment from tax authorities. The possible reduction in liabilities for uncertain tax positions resulting from the expiration of statutes of limitation in multiple jurisdictions in the next twelve months is approximately $0.8 million, excluding the interest, penalties and the effect of any related deferred tax assets or liabilities.