v3.5.0.2
ORGANIZATION AND DESCRIPTION OF BUSINESS (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
shares
Apr. 01, 2016
USD ($)
shares
Aug. 06, 2015
a
Plant
contract
location
mi
MMcf
Feb. 27, 2015
USD ($)
a
Plant
region
mi
shares
Mar. 31, 2016
USD ($)
Jun. 30, 2016
USD ($)
shares
Jun. 30, 2015
USD ($)
Dec. 31, 2015
shares
Partnership Equity and Distributions                
General partner units, outstanding | shares 429,365         429,365    
General partner ownership interest (as a percent)           3.70%    
Global market capitalization consecutive trading period           30 days    
Average global market capitalization, minimum required to be maintained           $ 15,000    
Amount of debt that will become due and payable if the Partnership remains out of compliance with all of the restrictive covenants under the Credit Agreement $ 214,500         $ 214,500    
Financing costs expense             $ 272  
Grace period           30 days    
Cash payment for contributed assets             $ 99,500  
Credit Agreement, Fourth Amendment | Revolving Credit Facility                
Partnership Equity and Distributions                
Amount of debt that will become due and payable if the Partnership remains out of compliance with all of the restrictive covenants under the Credit Agreement 214,500         $ 214,500    
Maximum borrowing capacity 214,700         $ 214,700    
Financing costs expense $ 900              
Settlement Agreement with AES and NuDevco                
Partnership Equity and Distributions                
Letter of credit, amount issued due to contract default         $ 15,000      
Proceeds from issuance of letter of credit, used to pay down debt under Credit Agreement   $ 15,000            
Legacy System contributed by Azure                
Partnership Equity and Distributions                
Aggregate consideration transferred       $ 162,500        
IDR units issued as payment (in shares) | shares       90        
Distance of gathering lines (in miles) | mi       666        
Area of land (in acres) | a       100,000        
Number of major downstream markets (in regions) | region       7        
Number of third-party processing plants (in plants) | Plant       3        
Common Units                
Partnership Equity and Distributions                
Limited partner's capital, units outstanding | shares 11,124,953         11,124,953   13,044,654
Subordinate Units                
Partnership Equity and Distributions                
Limited partner's capital, units outstanding | shares 0         0   8,724,545
Azure                
Partnership Equity and Distributions                
Other ownership interest, ownership percentage 100.00%         100.00%    
General partner ownership interest (as a percent)         1.90%      
Azure | Transaction Agreement                
Partnership Equity and Distributions                
Percentage of equity interests in General Partner acquired       100.00%        
Percentage of our incentive distribution rights acquired       90.00%        
Cash received, net       $ 92,500        
ETG System                
Partnership Equity and Distributions                
Distance of gathering lines (in miles) | mi     255          
Area of land (in acres) | a     336,000          
Number of long-term producer contracts (in contracts) | contract     23          
Number of treating plants (in plants) | Plant     2          
Processing capacity per day (in MMc/f) | MMcf     5          
Pipeline capacity per day (in MMc/f) | MMcf     17.50          
Number of interconnections with major interstate pipelines (in locations) | location     4          
Azure                
Partnership Equity and Distributions                
General partner ownership interest (as a percent)           3.70%    
Azure | Legacy System contributed by Azure                
Partnership Equity and Distributions                
Aggregate consideration transferred       162,500        
Cash payment for contributed assets       $ 99,500        
IDR units issued as payment (in shares) | shares       90        
Azure | Common Units                
Partnership Equity and Distributions                
Limited partner's capital, units outstanding | shares 255,319         255,319    
Limited partner's ownership interest (as a percent)           2.30%    
Azure | ETG System                
Partnership Equity and Distributions                
Percentage of equity interests in General Partner acquired     100.00%          
Publicly Held Units | Common Units                
Partnership Equity and Distributions                
Limited partner's capital, units outstanding | shares 10,869,634         10,869,634    
Limited partner's ownership interest (as a percent)           97.70%    
NuDevco | Settlement Agreement with AES and NuDevco                
Partnership Equity and Distributions                
Number of IDR units surrendered (in shares) | shares   10            
NuDevco | Common Units | Settlement Agreement with AES and NuDevco                
Partnership Equity and Distributions                
Number of limited partner units surrendered (in shares) | shares   1,939,265            
NuDevco | Subordinate Units | Settlement Agreement with AES and NuDevco                
Partnership Equity and Distributions                
Number of limited partner units surrendered (in shares) | shares   8,724,545            
Number of IDR units surrendered (in shares) | shares   1,939,265            
NuDevco | Azure                
Partnership Equity and Distributions                
Payment to acquire all of the outstanding membership interests in our General Partner       $ 7,000        
Option to acquire common and subordinated units held by NuDevco, percent of units held       20.00%        
IDRH | Transaction Agreement                
Partnership Equity and Distributions                
Number of IDR units recapitalized into (in shares) | shares       100        
Number of IDR units redeemed | shares       90        
Payment for redemption of IDR units       $ 63,000        
Incentive Distribution Rights | Azure                
Partnership Equity and Distributions                
Percentage of incentive distribution rights owned           100.00%