Derivative Instruments and Hedging Activity (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Amount of Income/(Loss) Recognized in OCI on Derivative (Effective Portion)	$ (411)	$ (1,677)	$ 330	$ (4,613)
Derivative Instruments, Amount of Income/(Loss) Reclassified from Accumulated OCI into Expense (Effective Portion)	$ (435)	$ (533)	$ (900)	$ (1,058)