Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.8.0.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 19, 2018
Apr. 19, 2018
Mar. 31, 2018
Apr. 09, 2018
Subsequent Event [Line Items]        
Property, Plant and Equipment, Additions $ 64,200   $ 65,804  
2018 Long term awards [Member] | Share-based Compensation Award, Tranche One [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     50.00%  
2018 Long term awards [Member] | Share-based Compensation Award, Tranche Two [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     50.00%  
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant       163,329
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price       $ 7.00
Subsequent Event [Member] | Share-based Compensation Award, Tranche One [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   50.00%    
Subsequent Event [Member] | Share-based Compensation Award, Tranche Two [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   50.00%    
Subsequent Event [Member] | 2018 Long term awards [Member]        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate       150.00%
Subsequent Event [Member] | Belpre Facilities [Member] | Operating Partnership Units [Member]        
Subsequent Event [Line Items]        
Stock Issued During Period, Value, New Issues $ 5,500      
Shares Issued, Price Per Share $ 9.00 $ 9.00    
Operating Lease, Weighted Average Remaining Lease Term 13 years 3 months 18 days