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Discontinued Operations - Narratives (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 04, 2015
Nov. 03, 2015
Jan. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2015
Jun. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
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 $ 32,621,000 $ 31,357,000 $ 32,568,000 $ 32,683,000 $ 31,286,000 $ 33,739,000 $ 63,925,000 $ 65,025,000 $ 96,546,000 $ 97,708,000 $ 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