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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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