|**Joint-Venture Investment**                                | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Equity Method Investments and Joint Ventures [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Joint-Venture Investments                                   | 16. Joint-Venture InvestmentSummarized below is the financial information for the Pelikan Artline joint-venture, in which we owned a50%non-controlling interest, through May 1, 2016, which was accounted for using the equity method. Accordingly, we recorded our proportionate share of earnings or losses on the line entitled "Equity in earnings of joint-venture" in the "Consolidated Statements of Income."Nine Months Ended September 30,(in millions of dollars)2016Net sales$34.9Gross profit14.1Net income4.1On May 2, 2016, the Company completed the PA Acquisition and accordingly, the results of the Pelikan Artline are included in the Company's condensed consolidated financial statements from the date of the PA Acquisition, May 2, 2016.
|                                                           
|                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                            | Nine Months Ended September 30,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|(in millions of dollars)                                    | 2016                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Net sales                                                   | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Gross profit                                                | 14.1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Net income                                                  | 4.1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

X- ReferencesNo definition available.
+ Details**Name:**
us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract**Namespace Prefix:**
us-gaap_**Data Type:**
xbrli:stringItemType**Balance Type:**
na**Period Type:**
duration X- DefinitionThe entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.
+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965
+ Details**Name:**
us-gaap_EquityMethodInvestmentsDisclosureTextBlock**Namespace Prefix:**
us-gaap_**Data Type:**
nonnum:textBlockItemType**Balance Type:**
na**Period Type:**
duration