Capital Stock and Equity Compensation (Shares of Capital Stock Reserved) (Details) - shares	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares reserved for future issuance (in shares)	1,478,842	1,310,521
Shares reserved for issuance under outstanding restricted stock unit awards (in shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares reserved for future issuance (in shares)	315,571	413,294
Deferred compensation to be paid in stock, including deferred stock units (in shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares reserved for future issuance (in shares)	7,681	13,498
Additional shares reserved for issuance under Rogers Corporation 2009 Long-Term Equity Compensation Plan (in shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares reserved for future issuance (in shares)	1,063,920	777,385
Shares reserved for issuance under the Rogers Corporation Global Stock Ownership Plan for Employees (in shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares reserved for future issuance (in shares)	91,670	106,344