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Financial Instruments and Fair Value Measurements (Narrative) (Details)
€ in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Feb. 18, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2018
EUR (€)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Borrowings outstanding $ 161,000     $ 161,000     $ 126,000  
Interest expense 1,410 $ 1,001   2,440 $ 2,004      
Payment of earn-out consideration paid within operating activities       (233) 905      
Earn-out consideration cash payment within financing activities         3,394      
Transfers in or out of Level 3       0        
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts Euro Functional Currency [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Notional amounts 1,400     1,400     0  
Cash Flow Hedging [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Notional amounts 15,402     15,402     $ 0  
Cash Flow Hedging [Member] | Interest Rate Swap [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Notional amounts           $ 50,000    
Interest expense 114     118        
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Credit Facility [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Borrowings outstanding 161,000     161,000        
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Forward Currency Contracts [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Notional amounts 16,802     16,802        
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Notional amounts 50,000     50,000        
Electronics [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Interest expense 313 63   400 119      
Control Devices [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Interest expense 89 $ 195   170 $ 377      
Control Devices [Member] | Particulate Matter Fixed Assets [Member] | Tallinn, Estonia Facility [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Asset impairments 2,326              
Control Devices [Member] | Selling, General and Administrative Expenses [Member] | Particulate Matter Fixed Assets [Member] | Tallinn, Estonia Facility [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Asset impairments $ 2,326     $ 2,326        
Orlaco [Member]                
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]                
Earn-out consideration     $ 8,474         € 7,500
Payment of earn-out consideration paid within operating activities     5,080          
Earn-out consideration cash payment within financing activities     $ 3,394