Commitments and contingencies	12 Months Ended
Commitments and contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies Pursuant to U.S. GAAP, accruals for estimated losses are recorded at the time information becomes available indicating that losses are probable and that the amounts are reasonably estimable. As is the case with other companies in similar industries, the Company faces exposure from actual or potential claims and legal proceedings from a variety of sources. Some of these exposures, as discussed below, have the potential to be material. Environmental matters The Company is subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which it operates. Spartanburg In connection with its acquisition of Tegrant in November 2011, the Company identified potential environmental contamination at a site in Spartanburg, South Carolina. The total remediation cost of the Spartanburg site was estimated to be $17,400 at the time of the acquisition and an accrual in this amount was recorded on Tegrant’s opening balance sheet. Since the acquisition, the Company has spent a total of $1,611 on remediation of the Spartanburg site. Based on favorable developments at the Spartanburg site, the Company reduced its estimated environmental reserve by $10,000 during the third quarter of 2019 in order to reflect its revised best estimate of what it is likely to pay in order to complete the remediation. This adjustment resulted in a $10,000 reduction in "Selling, general and administrative expenses" in the Company's Consolidated Statement of Income for the year ended December 31, 2019. At December 31, 2019 and 2018, the Company's accrual for environmental contingencies related to the Spartanburg site totaled $5,789 and $15,964, respectively. The Company cannot currently estimate its potential liability, damages or range of potential loss, if any, beyond the amounts accrued with respect to this exposure. However, the Company does not believe that the resolution of this matter has a reasonable possibility of having a material adverse effect on the Company's financial statements. Other environmental matters The Company has been named as a potentially responsible party at several other environmentally contaminated sites. All of the sites are also the responsibility of other parties. The potential remediation liabilities are shared with such other parties, and, in most cases, the Company’s share, if any, cannot be reasonably estimated at the current time. However, the Company does not believe that the resolution of these matters has a reasonable possibility of having a material adverse effect on the Company's financial statements. At December 31, 2019 and 2018, the Company's accrual for these other sites totaled $2,938 and $4,136, respectively. Summary As of December 31, 2019 and 2018, the Company (and its subsidiaries) had accrued $8,727 and $20,100, respectively, related to environmental contingencies. These accruals are included in “Accrued expenses and other” on the Company’s Consolidated Balance Sheets. Other legal and regulatory matters As described more fully in Note 14 to these Consolidated Financial Statements, the Company has received a final Revenue Agent's Report ("RAR") from the IRS proposing an adjustment to income for the 2013 tax year. The incremental tax liability associated with the proposed adjustment would be approximately $89,000, excluding interest and penalties. On January 22, 2018, the Company filed a protest to the proposed deficiency with the IRS. The Company received a rebuttal of its protest from the IRS on July 10, 2018, and the matter has now been referred to the Appeals Division of the IRS. The Company had a pre-conference hearing with IRS Appeals during the second quarter of 2019, and has had continued discussions with IRS Appeals throughout the year. If the matter is not resolved in IRS appeals, the next step would be to file a petition in Tax Court. The Company strongly believes the position of the IRS with regard to this matter is inconsistent with applicable tax laws and existing Treasury regulations, and that the Company's previously reported income tax provision for the year in question is appropriate. However, there can be no assurance that this matter will be resolved in the Company's favor. Regardless of whether the matter is resolved in the Company's favor, the final resolution of this matter could be expensive and time consuming to defend and/or settle. While the Company believes that the amount of tax originally paid with respect to this distribution is correct, and accordingly has not provided additional reserve for tax uncertainty, there is still a possibility that an adverse outcome of the matter could have a material effect on its results of operations and financial condition. In addition to those described above, the Company is subject to other various legal proceedings, claims and litigation arising in the normal course of business. While the outcome of these matters could differ from management’s expectations, the Company does not believe that the resolution of these matters has a reasonable possibility of having a material adverse effect on the Company’s financial statements. Commitments As of December 31, 2019, the Company had long-term obligations to purchase electricity and steam, which it uses in its production processes, as well as long-term purchase commitments for certain raw materials, principally old corrugated containers. These purchase commitments require the Company to make total payments of approximately $99,323, as follows: $39,707 in 2020; $20,960 in 2021; $23,134 in 2022, $9,325 in 2023 and a total of $6,197 from 2024 through 2028.