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Discontinued Operations - Narratives (Details) - USD ($)
 1 Months Ended 2 Months Ended 12 Months Ended
Dec. 04, 2015
Nov. 03, 2015
Jan. 31, 2016
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]              
Proceeds from lines of credit   $ 532,600,000          
Payments credit facility $ 369,200,000 326,500,000          
Outstanding borrowings   350,000,000          
Principle amount of senior notes $ 350,000,000.0            
Interest rate on credit facility 7.25%            
Redemption price, percentage 101.813%            
Other income       $ 400,000      
Selling, general and administrative       600,000 $ 131,919,000 $ 132,651,000 $ 118,851,000
Business Acquisition, Contingent Consideration              
Repayment of insurance proceeds         50,000,000    
PDVSA Gas | Subsequent Event              
Business Acquisition, Contingent Consideration              
Installment payments received     $ 5,200,000        
Exterran Corporation              
Business Acquisition, Contingent Consideration              
Proceeds received from contractual arrangements         493,000,000    
Scheduled installment payments         $ 79,300,000    
Payments to acquire equipment       $ 44,400,000      
Event III              
Business Acquisition, Contingent Consideration              
Separation and distribution agreement, receivable from sale of nationalized assets, maximum   $ 25,000,000.0