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Sale of Assets (Tables)
3 Months Ended
Mar. 31, 2013
Sale of Assets [Abstract]  
Changes in Non-controlling Interest
The following table details the changes in non-controlling interest for the three months ended March 31, 2013 and 2012 (in thousands):

 
March 31, 2013
 
 
March 31, 2012
 
Non-controlling interest, beginning of period
 
$
468
 
 
$
381
 
Net income
 
 
344
 
 
 
198
 
Distributions
 
 
(461
)
 
 
(376
)
Non-controlling interest, end of period
 
$
351
 
 
$
203