v3.5.0.2
ORGANIZATION AND DESCRIPTION OF BUSINESS (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 04, 2016
USD ($)
in
mi
MMcf
Jun. 06, 2016
USD ($)
Apr. 01, 2016
USD ($)
shares
Aug. 06, 2015
USD ($)
a
Plant
contract
location
mi
shares
MMcf
Feb. 27, 2015
USD ($)
a
Plant
region
mi
shares
Sep. 30, 2016
USD ($)
item
shares
MMcf
Mar. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
shares
MMcf
Sep. 30, 2015
USD ($)
Dec. 31, 2015
shares
Organization and Description of Business                    
General partner units, outstanding | shares           429,365   429,365    
General partner ownership interest (as a percent)               3.70%    
Gain on sale of assets           $ 4,752   $ 4,752    
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           $ 173,500   $ 173,500    
Grace period               30 days    
Global market capitalization consecutive trading period   30 days                
Average global market capitalization, minimum required to be maintained   $ 15,000                
Cash payment for contributed assets                 $ 99,500  
Draw from credit facility to finance cash consideration               $ 15,000    
Credit Agreement | Revolving Credit Facility                    
Organization and Description of Business                    
Number of limited duration waiver agreements entered into during the period | item           4        
Number of amendments to the Credit Agreement entered into during the period | item           2        
Maximum borrowing capacity           $ 173,700   173,700    
Fees associated with limited duration waiver agreements and amendments to the Credit Agreement           $ 700   $ 1,500    
Settlement Agreement with AES and NuDevco                    
Organization and Description of Business                    
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              
Panola I Processing Plant and Murvaul Pipeline | Disposed of by Sale, Not Discontinued Operations                    
Organization and Description of Business                    
Purchase price of assets sold $ 44,900                  
Gain on sale of assets 4,800                  
Proceeds from the sales of assets used to pay down debt under the senior secured revolving credit facility (the "Credit Agreement") $ 41,000                  
Legacy System contributed by Azure                    
Organization and Description of Business                    
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                    
Organization and Description of Business                    
Limited partner's capital, units outstanding | shares           11,284,341   11,284,341   13,044,654
Subordinate Units                    
Organization and Description of Business                    
Limited partner's capital, units outstanding | shares           0   0   8,724,545
Azure                    
Organization and Description of Business                    
Other ownership interest, ownership percentage           100.00%   100.00%    
General partner ownership interest (as a percent)             1.90%      
Azure | Transaction Agreement                    
Organization and Description of Business                    
Percentage of equity interests in General Partner acquired         100.00%          
Cash received, net         $ 92,500          
Percentage of our incentive distribution rights acquired         90.00%          
ETG System                    
Organization and Description of Business                    
Processing capacity per day (in MMc/f) | MMcf       5            
Distance of gathering lines (in miles) | mi       255            
Area of land (in acres) | a       336,000            
Cash consideration       $ 80,000            
Number of long-term producer contracts (in contracts) | contract       23            
Number of treating plants (in plants) | Plant       2            
Pipeline capacity per day (in MMc/f) | MMcf       17.50            
Number of interconnections with major interstate pipelines (in locations) | location       4            
ETG System | Common Units                    
Organization and Description of Business                    
Units issued as consideration (in shares) | shares       255,319            
Azure                    
Organization and Description of Business                    
General partner ownership interest (as a percent)               3.70%    
Azure | Legacy System contributed by Azure                    
Organization and Description of Business                    
Aggregate consideration transferred         $ 162,500          
Cash payment for contributed assets         $ 99,500          
IDR units issued as payment (in shares) | shares         90          
Azure | Common Units                    
Organization and Description of Business                    
Limited partner's capital, units outstanding | shares           255,319   255,319    
Limited partner's ownership interest (as a percent)               2.30%    
Azure | ETG System                    
Organization and Description of Business                    
Percentage of equity interests in General Partner acquired       100.00%            
Cash consideration       $ 80,000            
Draw from credit facility to finance cash consideration       $ 80,000            
Azure | ETG System | Common Units                    
Organization and Description of Business                    
Units issued as consideration (in shares) | shares       255,319            
Publicly Held Units | Common Units                    
Organization and Description of Business                    
Limited partner's capital, units outstanding | shares           11,029,022   11,029,022    
Limited partner's ownership interest (as a percent)               97.70%    
NuDevco | Settlement Agreement with AES and NuDevco                    
Organization and Description of Business                    
Number of IDR units surrendered (in shares) | shares     10              
NuDevco | Common Units | Settlement Agreement with AES and NuDevco                    
Organization and Description of Business                    
Number of limited partner units surrendered (in shares) | shares     1,939,265              
NuDevco | Subordinate Units | Settlement Agreement with AES and NuDevco                    
Organization and Description of Business                    
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                    
Organization and Description of Business                    
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                    
Organization and Description of Business                    
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                    
Organization and Description of Business                    
Percentage of incentive distribution rights owned               100.00%    
Panola I Processing Plant | Panola I Processing Plant and Murvaul Pipeline                    
Organization and Description of Business                    
Processing capacity per day (in MMc/f) | MMcf 100                  
Panola I Processing Plant | Panola I Processing Plant and Murvaul Pipeline | Disposed of by Sale, Not Discontinued Operations                    
Organization and Description of Business                    
Processing capacity per day (in MMc/f) | MMcf 100                  
Panola II Processing Plant                    
Organization and Description of Business                    
Processing capacity per day (in MMc/f) | MMcf           125   125    
Murvaul Pipeline | Panola I Processing Plant and Murvaul Pipeline | Disposed of by Sale, Not Discontinued Operations                    
Organization and Description of Business                    
Distance of steel pipelines | mi 51.1                  
Murvaul Pipeline | Panola I Processing Plant and Murvaul Pipeline | Disposed of by Sale, Not Discontinued Operations | Minimum                    
Organization and Description of Business                    
OD of steel pipelines | in 4.5                  
Murvaul Pipeline | Panola I Processing Plant and Murvaul Pipeline | Disposed of by Sale, Not Discontinued Operations | Maximum                    
Organization and Description of Business                    
OD of steel pipelines | in 12.75