Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

	March 31, 2017				December 31, 2016
	Carrying Value		Fair Value		Carrying Value		Fair Value
Note receivable - affiliates	$	15,000	$	15,797	$	15,000	$	15,797
2021 Senior unsecured notes	372,333		381,756		372,239		377,882

	Level 2
	March 31, 2017			December 31, 2016
Commodity derivative contracts, net	$	(67	)	$	(3,904	)