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Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Derivative [Line Items]
Gains (losses) on intercompany receivables	$ 400	$ (700)
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	937		$ 2,935
Fair value, liabilities	(2,567)		(1,064)
Derivative Assets (Liabilities), at Fair Value, Net	(1,630)		1,871
Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Forward contracts not designated as hedging instruments net realized gains (losses)	(300)	600
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			2,931
Fair value, liabilities			(1,026)
Derivative Assets (Liabilities), at Fair Value, Net			1,905
Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Current Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	930
Fair value, liabilities	(2,541)
Derivative Assets (Liabilities), at Fair Value, Net	(1,611)
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	21,300
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			4
Fair value, liabilities			(38)
Derivative Assets (Liabilities), at Fair Value, Net			$ (34)
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Other Current Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Fair value, assets	7
Fair value, liabilities	(26)
Derivative Assets (Liabilities), at Fair Value, Net	(19)
Cash Flow Hedging [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	101,800
Cash flow hedges realized gains	500	$ 2,700
Unrealized gains on cash flow hedges in accumulated other comprehensive income (loss) expected to be recognized in the next fiscal year	$ (1,000)

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Fair value of liability associated with 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.

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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.

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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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