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Financial Instruments and Fair Value Measurements (Narrative) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) security | Jun. 30, 2014 USD ($) security | Sep. 30, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) security lb | Oct. 04, 2010 USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Assets fair value adjustment |  |  |  |  | $ 0 | $ 0 |  |
Goodwill impairment charge (benefit) |  |  |  |  |  |  | $ 51,458,000 |
Mexican Peso-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Number of hedge contracts | security |  | 5 |  |  |  |  | 5 |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Gain on termination of Interest Rate Swap |  | $ 371,000 |  |  |  |  |  |
Reduced interest expense as a result of swap |  |  |  |  |  |  | $ 641,000 |
Senior Notes [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Face value of senior secured notes |  |  |  |  | $ 175,000,000 |  |  |
Fixed interest rate |  |  |  |  |  |  |  | 9.50%
Debt instrument, maturity date |  |  |  |  | Oct. 15, 2017 |  |  |
Cash Flow Hedging [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Amount from cash flow hedge derivatives to be reclassified in the next year |  |  |  |  | $ 28,000 |  |  |
Cash Flow Hedging [Member] | Copper Commodity [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Number of hedge contracts expected to be fulfilled | security |  | 2 |  |  |  |  | 2 |
Fixed price commodity contracts (in pounds) | lb |  |  |  |  |  |  | 317,000 |
Designated as Hedging Instrument [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Number of hedge contracts expected to be fulfilled | security |  | 2 |  |  |  |  | 2 |
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 | [1] |  |  |  | 5,699,000 | 22,208,000 |  |
Designated as Hedging Instrument [Member] | 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 |  |  |  |  |  | 2,421,000 |  |
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts, Swedish Krona Functional Currency [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  | 10,007,000 |  |
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  | 5,699,000 | 9,780,000 |  |
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Interest rate swap, notional amount |  |  |  |  |  |  |  | $ 45,000,000
Not Designated as Hedging Instrument [Member] | Forward Currency Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | [1] |  |  |  | 1,601,000 | 1,647,000 |  |
Not Designated as Hedging Instrument [Member] | Euro-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  | 1,601,000 | 1,647,000 |  |
Gain (loss) on derivative instruments held for trading purposes, net |  |  |  |  | 57,000 | 336,000 | $ 1,205,000 |
Not Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Copper Commodity [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Gain on derivatives not designated as hedging instruments |  |  | $ 77,000 |  |  |  | 77,000 |
London Interbank Offered Rate (LIBOR) [Member] | Fair Value Hedging [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Discription of variable rate basis of derivative |  |  |  |  |  |  |  | 7.20%
Variable interest rate in addition to LIBOR |  |  |  |  |  |  |  | 7.20%
Wiring [Member] | Not Designated as Hedging Instrument [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Number of hedge contracts | security |  |  | 3 |  |  |  |  |
Gain recognized on dedesignation of hedge |  |  | $ 320,000 |  |  |  |  |
PST [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Goodwill impairment charge (benefit) |  | $ 27,960,000 | $ 29,300,000 | $ 23,498,000 |  |  | $ 51,458,000 |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Financial assets carried at fair value |  |  |  |  | 0 | 0 |  |
Financial liabilities carried at fair value |  |  |  |  | 0 | 0 |  |
Fair Value, Inputs, Level 2 [Member] | Forward Currency Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Forward currency contracts, financial assets |  |  |  |  | 0 | 474,000 |  |
Forward currency contracts, financial liabilities |  |  |  |  | 31,000 | 93,000 |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Financial assets carried at fair value |  |  |  |  | 0 | 0 |  |
Financial liabilities carried at fair value |  |  |  |  | $ 0 | $ 0 |  |
[1] | Notional amounts represent the gross contract / notional amount of the derivatives outstanding.

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