Fair Value Measurements - Schedule of Carrying Amount of Assets and Liabilities on a Recurring Basis(Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Non-current assets (liabilities)
Derivative Liability	$ (2,722)	$ (13,250)
Derivative asset		2,475
Quoted Prices in Active Markets for Identical Assets (Level 1)
Non-current assets (liabilities)
Derivative Liability	0	0
Derivative asset		0
Significant Other Observable Inputs (Level 2)
Non-current assets (liabilities)
Derivative Liability	(2,722)	(13,250)
Derivative asset		2,475
Significant Unobservable Inputs (Level 3)
Non-current assets (liabilities)
Derivative Liability	$ 0	0
Derivative asset		$ 0