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Financial Instruments and Fair Value Measurements (Narrative) (Details) (USD $)
 3 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2014
Euro-Denominated Foreign Currency Forward Contracts [Member]
Mar. 31, 2013
Euro-Denominated Foreign Currency Forward Contracts [Member]
Mar. 31, 2014
Interest Rate Swap [Member]
Mar. 31, 2013
Interest Rate Swap [Member]
Mar. 31, 2014
Senior Notes [Member]
Dec. 31, 2013
Senior Notes [Member]
Mar. 31, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Currency Contracts [Member]
Dec. 31, 2013
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Currency Contracts [Member]
Mar. 31, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Mexican Peso-Denominated Foreign Currency Forward Contracts [Member]
Dec. 31, 2013
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Mexican Peso-Denominated Foreign Currency Forward Contracts [Member]
Mar. 31, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Copper Commodity [Member]
lb
Dec. 31, 2013
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Copper Commodity [Member]
lb
Mar. 31, 2014
Designated as Hedging Instrument [Member]
Fair Value Hedging [Member]
Interest Rate Swap [Member]
Dec. 31, 2013
Designated as Hedging Instrument [Member]
Fair Value Hedging [Member]
Interest Rate Swap [Member]
Mar. 31, 2014
Not Designated as Hedging Instrument [Member]
Forward Currency Contracts [Member]
Dec. 31, 2013
Not Designated as Hedging Instrument [Member]
Forward Currency Contracts [Member]
Mar. 31, 2014
Not Designated as Hedging Instrument [Member]
Euro-Denominated Foreign Currency Forward Contracts [Member]
Dec. 31, 2013
Not Designated as Hedging Instrument [Member]
Euro-Denominated Foreign Currency Forward Contracts [Member]
Mar. 31, 2014
London Interbank Offered Rate (LIBOR) [Member]
Interest Rate Swap [Member]
Mar. 31, 2014
People's Bank of China One-Year Lending Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                                          
Face value of senior secured notes           $ 175,000,000 $ 175,000,000                            
Estimated fair value of senior secured notes           188,800,000 190,100,000                            
Notional amounts               33,750,000 [1] 45,000,000 [1] 33,750,000 45,000,000     45,000,000 [1] 45,000,000 [1] 13,526,000 [1] 13,335,000 [1] 13,526,000 13,335,000    
Gain (loss) on derivative instruments held for trading purposes, net   (61,000) (363,000)                                    
Fixed price commodity contracts (in pounds)                       1,146,000 [1] 1,582,000 [1]                
Discription of variable rate basis of derivative       the Company pays a variable interest rate equal to the six-month London Interbank Offered Rate ("LIBOR") plus 7.2%                                  
Variable interest rate in addition to LIBOR                                       7.20%  
Fixed interest rate           9.50%                              
Reduced interest expense as a result of swap       (225,000) (231,000)                                
Debt interest rate       9.50%                                 7.39%
Amount from cash flow hedge derivatives to be reclassified $ 254,000                                        
[1] Notional amounts represent the gross contract / notional amount of the derivatives outstanding. The fixed price commodity contract notional amounts are in pounds.