Other Current Assets (Tables)
 12 Months Ended
Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets
 
As of December 31,
 
2016
 
2015
Margin deposits with brokers
$
33,193

 
$
37,089

Natural gas transportation, current portion
2,504

 
2,716

Income tax receivable
379

 
1,697

Deposits
—

 
5,758

Other
7,240

 
9,746

Other current assets
$
43,316

 
$
57,006