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Financial Instruments and Fair Value Measurements (Narrative) (Details) € in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Feb. 18, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 EUR (€)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Borrowings outstanding	$ 144,000		$ 144,000			$ 126,000
Interest expense	1,882	$ 1,149	4,322	$ 3,153
Payment of earn-out consideration paid within operating activities			(3,045)	1,846
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	800		800			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	8,150		8,150			$ 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	156		274
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Credit Facility [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Borrowings outstanding	144,000		144,000
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	8,950		8,950
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	103	79	503	198
Control Devices [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Interest expense	99	$ 189	269	566
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

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