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Net Income Per Unit (Tables)
 6 Months Ended
Jun. 30, 2015
Net Income Per Unit [Abstract]  
Net Income Per Unit Basic and Diluted (Table Text Block)
 
 
 
 
 
 
 
 
BASIC and DILUTED
  
For the six month periods
ended June 30,
Numerators
  
2015
 
  
2014
Partnership's net income
  
$
26,260
 
 
$
19,058
Less:
  
 
 
 
 
 
 
Partnership's net income available to preferred unit holders
  
 
5,628
 
 
 
        8,004
General Partner's interest in Partnership's net income
  
 
411
 
 
 
216
Partnership's net income available to common unit holders
  
$
20,221
 
 
$
10,838
Denominators
  
 
 
 
 
 
 
Weighted average number of common units outstanding, basic and diluted
  
 
110,427,242
 
 
 
88,494,025
Net income per common unit:
  
 
 
 
 
 
 
Basic and diluted
  
$
0.18
 
 
$
0.12