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Shareholders' Equity and Equity Compensation (Shares of Capital Stock Reserved) (Details) - shares shares in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 1,763,635 | 1,997,257
Rogers Corporation Stock acquisition program (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 120,883 | 120,883
Stock options and restricted stock (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 545,018 | 659,302
Rogers Corporation 2009 Long-Term Equity Compensation Plan (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 793,603 | 892,163
Rogers Employee and Investment Plan (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 169,044 | 169,044
Rogers Corporation Global Stock Ownership Plan for Employees (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 117,987 | 133,113
Deferred compensation to be paid in stock, including deferred stock units (shares) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock shares reserved for future issuance (in shares) | 17,100 | 22,752

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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