XML 113 R93.htm IDEA: XBRL DOCUMENT v3.3.1.900
Employee Savings and Investment Plan (Additional Information) (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer contributions $ 6,500,000 $ 13,000,000  
Rogers Employee Savings and Investment Plan (RESIP)      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
IRS deferral limit $ 18,000 17,500  
Employee compensation subject to employer matching percent 6.00%    
Employer contributions $ 3,200,000 $ 2,700,000 $ 2,100,000
Rogers Employee Savings and Investment Plan (RESIP) | 100% match      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employee compensation subject to employer matching percent 3.50%    
Rogers Employee Savings and Investment Plan (RESIP) | 100% match | 1% of compensation      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer matching contribution percent 100.00%    
Employee compensation subject to employer matching percent 1.00%    
Rogers Employee Savings and Investment Plan (RESIP) | 50% match | 5% of compensation      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer matching contribution percent 50.00%    
Employee compensation subject to employer matching percent 5.00%