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Sale of Assets (Tables)
 6 Months Ended
Jun. 30, 2013
Sale of Assets [Abstract]  
Changes in Non-controlling Interest
The following table details the changes in non-controlling interest for the three and six months ended June 30, 2013 and 2012 (in thousands):

 
 
Three Months Ended June 30,
  
Six Months Ended June 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Non-controlling interest, beginning of period
 
$
351
  
$
203
  
$
468
  
$
381
 
Net income
  
616
   
676
   
960
   
874
 
Distributions
  
(344
)
  
(196
)
  
(805
)
  
(572
)
Non-controlling interest, end of period
 
$
623
  
$
683
  
$
623
  
$
683