v3.4.0.3
SUBSEQUENT EVENTS (Details) - USD ($)
$ in Thousands
3 Months Ended
May. 10, 2016
Apr. 01, 2016
Mar. 31, 2016
Apr. 30, 2016
Dec. 31, 2015
Apr. 01, 2015
Mar. 31, 2015
Subsequent Events              
Debt reduction     $ (228,665)   $ (228,474)    
Elimination of remaining intangible asset     $ (28,745)   $ (59,583)   $ (64,458)
Subsequent Event | Adjustment | Partners Capital              
Subsequent Events              
Debt reduction       $ 15,000      
Elimination of remaining intangible asset       28,700      
Treasury equity for the fair value of units surrendered       $ 13,700      
Subsequent Event | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Proceeds from issuance of letter of credit, used to pay down debt under Credit Agreement   $ 15,000          
Subordinate Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)     8,724,545   8,724,545    
Subordinate Units | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)   0          
Common Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)     13,064,218   13,044,654    
Common Units | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)   11,100,000       11,124,953  
NuDevco | Incentive Distribution Rights [Member] | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Percentage of incentive distribution rights surrendered   10.00%          
NuDevco | Subsequent Event | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Number of IDR units surrendered (in shares)   10          
NuDevco | Subordinate Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)     8,724,545        
Limited partner's ownership percentage     40.00%        
NuDevco | Subordinate Units | Subsequent Event | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Number of limited partner units surrendered (in shares)   8,724,545          
Number of IDR units surrendered (in shares)   1,939,265          
Limited partner's capital, units outstanding (in shares)   11,124,953          
NuDevco | Common Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares)     1,939,265        
Limited partner's ownership percentage     8.90%        
NuDevco | Common Units | Subsequent Event | Settlement Agreement with AES and NuDevco              
Subsequent Events              
Number of limited partner units surrendered (in shares)   1,939,265          
Publicly Held Units | Common Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares) 10,869,634   10,869,634        
Limited partner's ownership percentage 97.70%   49.90%        
Azure | Common Units              
Subsequent Events              
Limited partner's capital, units outstanding (in shares) 255,319   255,319        
Limited partner's ownership percentage 2.30%   1.20%