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Mezzanine Equity (Tables)
9 Months Ended
Sep. 30, 2014
Temporary Equity Disclosure [Abstract]  
Summary of Activity in Mezzanine Equity
The following table summarizes the activity in mezzanine equity for the nine months ended September 30:
 
2014
 
2013
Beginning balance
$
60,361

 
$
153,372

Conversion of Preferred Shares
(62,000
)
 
(100,000
)
Accretion of beneficial conversion feature discount (Deemed dividend) (1)
1,639

 
6,573

Ending balance
$

 
$
59,945

(1)
Accretion includes an accelerated write-off of the unamortized discount of $0.8 million and $3.5 million related to the conversion of Preferred Shares during 2014 and 2013, respectively.