Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.5.0.2
Commitments and Contingencies (Details)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 09, 2016
complaint
company
Mar. 11, 1997
Sep. 30, 2016
USD ($)
well
Sep. 30, 2016
USD ($)
well
Dec. 31, 1997
USD ($)
well
Dec. 31, 2015
USD ($)
Commitments [Line Items]            
Plugging and abandonment escrow account on the WCBB properties (Note 10)     $ 3,081 $ 3,081   $ 3,089
Loss contingency, new claims filed, number | complaint 2          
WCBB            
Commitments [Line Items]            
Purchasing remaining percent interest In oil and gas property, percent         50.00%  
Payments held for restricted cash         $ 18  
Significant plugging commitment minimum number of wells to be plugged | well         20  
Tenure of minimum wells to be plugged   20 years        
Number of wells plugged | well     483 483    
Muskie Proppant LLC            
Commitments [Line Items]            
Long-term purchase commitment, accrued damages , amount     $ 200 $ 2,100    
Cameron Parish            
Commitments [Line Items]            
Loss contingency, number of defendant companies in a complaint (among 26, more than 40) | company 26          
Vermillion Parish            
Commitments [Line Items]            
Loss contingency, number of defendant companies in a complaint (among 26, more than 40) | company 40