Derivative Instruments and Hedging Activities - (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 132	$ 259
Derivative, Notional Amount	2,447		1,029
Derivative Asset, Fair Value, Gross Asset	$ 138		$ 6