Income Taxes	9 Months Ended
Income Taxes	Sep. 27, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective tax rates for the three- and nine-month periods ended September 27, 2020 were (0.8)% and 18.6%, respectively, and its effective tax rates for the three- and nine-month periods ended September 29, 2019 were 22.4% and 24.1%, respectively. The rates for the three- and nine-month periods ended September 27, 2020 and September 29, 2019 varied from the U.S. statutory rate due primarily to the unfavorable effect of certain international operations that were subject to tax rates generally higher than the U.S. tax rate, the effect of state income taxes, and the effect of the Global Intangible Low Taxed Income (GILTI) tax. The rates for the three- and nine-month periods ended September 27, 2020 also varied from the U.S. statutory rate due to recording the $20,355 write-down of a deferred tax liability related to classifying the European contract packaging business as held for sale at September 27, 2020. The Company and/or its subsidiaries file federal, state and local income tax returns in the United States and various foreign jurisdictions. The Company's U.S. federal income tax return is currently under audit for the 2012 and 2013 tax years, and the Company expects to finalize settlement of this audit by the end of 2020. Other than the aforementioned audit, with few exceptions, the Company is no longer subject to income tax examinations by tax authorities for years prior to 2016. The Company is currently reviewing its utilization of foreign tax credits in previously filed income tax returns and, accordingly, may elect to amend its existing tax filings. A conclusion on this matter is expected to be reached in the next three to six months, and it is reasonably possible that a benefit material to the Company's financial statements will be recognized at that time. The Company’s reserve for uncertain tax benefits has increased by approximately $900 since December 31, 2019 due primarily to an increase in reserves related to existing uncertain tax positions. The Company believes that it is reasonably possible that the amount reserved for unrecognized tax benefits at September 27, 2020 could decrease by approximately $6,000 over the next twelve months. This change includes the anticipated increase in reserves related to existing positions offset by settlements of issues currently under examination and the release of existing reserves due to the expiration of the statute of limitations. Although the Company’s estimate for the potential outcome for any uncertain tax issue is highly judgmental, management believes that any reasonably foreseeable outcomes related to these matters have been adequately provided for. However, future results may include favorable or unfavorable adjustments to estimated tax liabilities in the period the assessments are made or resolved or when statutes of limitation on potential assessments expire. Additionally, the jurisdictions in which earnings or deductions are realized may differ from current estimates. As a result, the Company’s effective tax rate may fluctuate significantly on a quarterly basis. The Company has operations and pays taxes in many countries outside of the U.S. and taxes on those earnings are subject to varying rates. The Company is not dependent upon the favorable benefit of any one jurisdiction to an extent that the loss of such benefit would have a material effect on the Company’s overall effective tax rate. As disclosed in prior periods, in February 2017 the Company received a Notice of Proposed Adjustment (“NOPA”) from the Internal Revenue Service (“IRS”) proposing adjustments to the 2012 and 2013 tax years. In 2018, the Company filed a protest to the proposed deficiency and the matter was referred to the Appeals Division of the IRS. In the second quarter of 2020, the Company agreed to pay approximately $6,000 in taxes and interest to settle the dispute and recorded the impact of this settlement in its provision for income taxes. The Company anticipates finalizing the audit and paying the assessment by the end of 2020.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.