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Restructuring and Other Charges - Segments (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Restructuring and Other Charges    
Severance Costs $ 2,268 $ 9,269
Estimated additional charges 4,059 4,059
Contract Operations    
Restructuring and Other Charges    
Severance Costs 675 2,916
Estimated additional charges 508 508
Aftermarket Services    
Restructuring and Other Charges    
Severance Costs 432 801
Estimated additional charges 312 312
Other    
Restructuring and Other Charges    
Severance Costs 1,161 5,552
Estimated additional charges $ 3,239 $ 3,239