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Restatement of Previously Reported Consolidated Financial Statements - Narratives (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Error Corrections and Prior Period Adjustments Restatement        
Net income $ (2,384) $ (14,998) $ (9,110) $ 24,972
Restatement Adjustments        
Error Corrections and Prior Period Adjustments Restatement        
Net income   (22,787)   (23,902)
Restatement Adjustments | Belleli EPC        
Error Corrections and Prior Period Adjustments Restatement        
Net income   $ (22,900)   $ (24,000)