Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivative [Line Items]
Gains (losses) on intercompany receivables	$ (700,000)	$ (300,000)
Derivative Asset [Abstract]
Fair value, assets	9,292,000		6,211,000
Fair value, liabilities	(1,034,000)		(1,032,000)
Derivative Assets (Liabilities), at Fair Value, Net	8,258,000		5,179,000
Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Forward contracts not designated as hedging instruments net realized gains (losses)	600,000	200,000
Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Asset [Abstract]
Fair value, assets	9,291,000		6,167,000
Fair value, liabilities	(984,000)		(971,000)
Derivative Assets (Liabilities), at Fair Value, Net	8,307,000		5,196,000
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	35,800,000
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Asset [Abstract]
Fair value, assets	1,000		44,000
Fair value, liabilities	(50,000)		(61,000)
Derivative Assets (Liabilities), at Fair Value, Net	(49,000)		(17,000)
Cash Flow Hedging [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of cash flow hedges	77,800,000
Cash flow hedges realized gains (losses)	2,700,000	(100,000)
Unrealized gain (loss) on cash flow hedges in accumulated other comprehensive income (loss) expected to be recognized in the next fiscal year	$ 5,200,000