Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Derivative [Line Items]
Gains (losses) on intercompany receivables	$ 0	$ 400
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	2,549		$ 4,010
Derivative Liability, Fair Value, Gross Liability	(1,460)		(1,564)
Derivative Assets (Liabilities), at Fair Value, Net	1,089		2,446
Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Forward contracts not designated as hedging instruments net realized gains (losses)	(200)	(300)
Designated as Hedging Instrument [Member] \| Foreign Currency Forward Contracts [Member] \| Prepaid Expenses and Other Current Assets [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	2,528		3,962
Derivative Liability, Fair Value, Gross Liability	(1,419)		(1,510)
Derivative Assets (Liabilities), at Fair Value, Net	1,109		2,452
Not Designated as Hedging Instrument [Member] \| Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	30,700
Not Designated as Hedging Instrument [Member] \| Foreign Currency Forward Contracts [Member] \| Prepaid Expenses and Other Current Assets [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	21		48
Derivative Liability, Fair Value, Gross Liability	(41)		(54)
Derivative Assets (Liabilities), at Fair Value, Net	(20)		$ (6)
Cash Flow Hedging [Member] \| Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	106,000
Cash flow hedges realized gains	300	$ 500
Unrealized gains on cash flow hedges in accumulated other comprehensive income (loss) expected to be recognized in the next fiscal year	$ 700

Cash Flow Hedge Gain Loss Reclassified To Net Sales Or Cost Of Sales Net

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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