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Income Taxes: (Tables)
6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]  
Schedule of income tax benefit of TRSs
The income tax benefit of the TRSs are as follows:
 
For the Three Months Ended June 30,
 
For the Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
Current
$

 
$

 
$

 
$

Deferred
283

 
2,898

 
1,218

 
3,070

Income tax benefit
$
283

 
$
2,898

 
$
1,218

 
$
3,070