Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Non-current assets and liabilities
Derivative assets	$ 4,508
Derivative liability	(12,851)	$ (7,649)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Non-current assets and liabilities
Derivative assets	0
Derivative liability	0	0
Significant Other Observable Inputs (Level 2)
Non-current assets and liabilities
Derivative assets	4,508
Derivative liability	(12,851)	(7,649)
Significant Unobservable Inputs (Level 3)
Non-current assets and liabilities
Derivative assets	0
Derivative liability	$ 0	$ 0