Other Current Assets (Tables)
 12 Months Ended
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets
 
As of December 31,
 
2015
 
2014
Margin deposits with brokers
$
37,089

 
$
22,779

Deposits
5,758

 
—

Natural gas transportation, current portion
2,716

 
11,748

Income tax receivable
1,697

 
436

Prepaid petroleum products
—

 
8,071

Other
9,746

 
9,382

Other current assets
$
57,006

 
$
52,416