Foreign Currency Derivative Instruments Foreign Currency Derivative Instruments (Details 2) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross amounts of recognized liabilities	$ (176)	$ (1,993)
Gross amounts offset in the condensed consolidated balance sheets	9	350
Net amount of recognized liability presented in the condensed consolidated balance sheets	$ (167)	$ (1,643)