v3.3.1.900
PARTNERSHIP EQUITY AND DISTRIBUTIONS - Narrative (Details) - $ / shares
12 Months Ended
Feb. 01, 2016
Dec. 31, 2015
Aug. 06, 2015
Dec. 31, 2015
Partnership Equity and Distributions        
General partner units, outstanding   429,365   429,365
General partner ownership interest   1.93%    
Distribution period       45 days
Minimum quarterly distribution per unit (in dollars per share)       $ 0.35
Annualized minimum quarterly distribution per unit (in dollars per share)       $ 1.40
Minimum quarterly distribution in the event that the distributions are reinstated after the temporary suspension of dividends $ 0.35      
Incentive distribution rights, units outstanding   100   100
Common units' right to receive distributions of available cash from operating surplus each quarter before any distributions may be made on the subordinated units (in dollars per share)       $ 0.35
Azure        
Partnership Equity and Distributions        
General partner ownership interest   1.93%    
Common Units        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   13,044,654   13,044,654
Units issued as consideration (in shares)       255,319
Common Units | ETG System        
Partnership Equity and Distributions        
Units issued as consideration (in shares)     255,319  
Common Units | General Partner        
Partnership Equity and Distributions        
Limited partner's ownership percentage       1.20%
Common Units | Azure        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   255,319   255,319
Limited partner's ownership percentage       1.20%
Common Units | Azure | ETG System        
Partnership Equity and Distributions        
Units issued as consideration (in shares)     255,319 255,319
Common Units | NuDevco        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   1,939,265   1,939,265
Limited partner's ownership percentage   8.90%   8.90%
Common Units | Publicly Held Units        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   10,850,070   10,850,070
Limited partner's ownership percentage   49.80%   49.80%
Subordinate Units        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   8,724,545   8,724,545
Subordinate Units | NuDevco        
Partnership Equity and Distributions        
Limited partner's capital, units outstanding (in shares)   8,724,545   8,724,545
Limited partner's ownership percentage   40.10%   40.10%
Incentive Distribution Rights [Member]        
Partnership Equity and Distributions        
Incentive distribution rights, units outstanding   90   90
Incentive Distribution Rights [Member] | First Target Distribution        
Partnership Equity and Distributions        
Percentage of quarterly distributions of available cash from operating surplus for distributions       13.00%
Target distribution per unit per quarter (in dollars per share)       $ 0.4025
Incentive Distribution Rights [Member] | Second Target Distribution        
Partnership Equity and Distributions        
Percentage of quarterly distributions of available cash from operating surplus for distributions       23.00%
Target distribution per unit per quarter (in dollars per share)       $ 0.4375
Incentive Distribution Rights [Member] | Third Target Distribution        
Partnership Equity and Distributions        
Percentage of quarterly distributions of available cash from operating surplus for distributions       48.00%
Target distribution per unit per quarter (in dollars per share)       $ 0.5250
Incentive Distribution Rights [Member] | Azure        
Partnership Equity and Distributions        
Percentage of incentive distribution rights owned   90.00%   90.00%
Incentive Distribution Rights [Member] | NuDevco        
Partnership Equity and Distributions        
Percentage of incentive distribution rights owned   10.00%   10.00%
Incentive distribution rights, units outstanding   10   10
Incentive Distribution Rights [Member] | Maximum        
Partnership Equity and Distributions        
Percentage of quarterly distributions of available cash from operating surplus for distributions       48.00%
Azure        
Partnership Equity and Distributions        
Other ownership interest, ownership percentage   100.00%   100.00%