XML 67 R49.htm IDEA: XBRL DOCUMENT v3.7.0.1
Derivative Instruments Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Derivative Instruments [Abstract]          
Foreign Currency Contract, Asset, Fair Value Disclosure $ 414   $ 414   $ 191
Accumulated Unrealized Gain (Loss) on Cash Flow Hedging Instruments 276 $ 161 276 $ 161  
Derivative Instruments, Gain (Loss) Recognized in Income, Net $ 6 $ 3 $ 43 $ 359