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Income Taxes: (Tables)
3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Schedule of income tax benefit of TRSs
The income tax provision of the TRSs are as follows:
 
For the Three Months Ended March 31,
 
2016
 
2015
Current
$

 
$

Deferred
(1,317
)
 
935

Income tax (expense) benefit
$
(1,317
)
 
$
935