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Retirement Plans (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Retirement Plans (Textual) [Abstract]      
Amount expensed $ 5.1 $ 4.5 $ 3.5
Retirement Plans (Additional Textual) [Abstract]      
Noncontributory benefit pension plans covering active employees 11.00%    
Recognized pre - tax losses related to pension plan 8.1    
Service costs related to pension plan 0.6    
Other postretirement benefit plan unrecognized amounts 0    
CTS Common Stock [Member]
     
Retirement Plans (Textual) [Abstract]      
Percentage Of Total Plan Assets 6.00% 5.00%  
Equity securities [Member] | CTS Common Stock [Member]
     
Retirement Plans (Textual) [Abstract]      
CTS common stock included in pension plan assets, Amount 15.6 13.4  
Real Estate [Member]
     
Retirement Plans (Textual) [Abstract]      
Real estate investment grade securities 4.9 4.4  
Domestic Pension Plans [Member]
     
Retirement Plans (Textual) [Abstract]      
Contribution to pension and other post retirement benefit plans 0    
Other Postretirement Benefit Plan [Member]
     
Retirement Plans (Textual) [Abstract]      
Contribution to pension and other post retirement benefit plans 0    
Expected contribution to be made by CTS 0.4    
Foreign Pension Plans [Member]
     
Retirement Plans (Textual) [Abstract]      
Expected contribution to be made by CTS 1.6    
United States Pension Plans of US Entity, Defined Benefit [Member]
     
Retirement Plans (Textual) [Abstract]      
Expected contribution to be made by CTS $ 1.0