Fair Value Measurements (Details Textuals) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative Assets	$ 2,300	$ 1,900
Derivative Liabilities	2,800	2,400
Cash Equivalents	10,400	5,600
Change in Carrying Value Verse Fair Value of Long Term Debt	(400)
Business Combination, Contingent Consideration, Liability	30,900
Fair Value, Measurements, Recurring [Member]
Cash Equivalents	$ 10,364	$ 5,616