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Long-Term Debt - Archrock Credit Facility (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2015
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Revolving Credit Facility | Minimum          
Line of Credit Facility          
Line of credit facility, commitment fee (percentage)       0.375%  
Revolving Credit Facility | Maximum          
Line of Credit Facility          
Line of credit facility, commitment fee (percentage)       0.50%  
Revolving Credit Facility | Revolving credit facility due November 2020          
Line of Credit Facility          
Debt instrument, expiration period 5 years        
Revolving credit facility borrowing capacity $ 350,000,000        
Long-term line of credit   $ 75,500,000   $ 75,500,000  
Undrawn capacity under revolving credit facility   $ 259,400,000   $ 259,400,000  
Total Debt to EBITDA ratio       4.25  
Debt instrument effective interest rate (percentage)   1.75%   1.75%  
Commitment fee amount   $ 200,000 $ 200,000 $ 500,000 $ 400,000
Revolving Credit Facility | Revolving credit facility due November 2020 | Minimum          
Line of Credit Facility          
Line of credit facility, commitment fee (percentage)       0.25%  
Revolving Credit Facility | Revolving credit facility due November 2020 | Maximum          
Line of Credit Facility          
Undrawn capacity under revolving credit facility   156,500,000   $ 156,500,000  
Line of credit facility, commitment fee (percentage)       0.50%  
Letter of credit | Revolving credit facility due November 2020          
Line of Credit Facility          
Outstanding letter of credit   $ 15,100,000   $ 15,100,000