Fair Value Measurements - Summary of Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financial assets
Current derivative assets	$ 185	$ 3,694
Financial liabilities
Current derivative liabilities	(1,237)
Noncurrent derivative liabilities	(1,101)
Fair Value on a Recurring Basis [Member]
Financial assets
Current derivative assets	185	3,694
Net Recognized Assets	185	3,694
Financial liabilities
Current derivative liabilities	(1,237)
Noncurrent derivative liabilities	(1,101)
Net Recognized Liabilities	(2,338)
Fair Value on a Recurring Basis [Member] | Level 2 [Member]
Financial assets
Current derivative assets	185	3,694
Net Recognized Assets	185	$ 3,694
Financial liabilities
Current derivative liabilities	(1,237)
Noncurrent derivative liabilities	(1,101)
Net Recognized Liabilities	$ (2,338)