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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2014
Equity [Abstract]  
Schedule of Conversions of Stock
The following table presents the conversion of all classes of stock on March 25, 2014:
 
 
Prior to Conversion
 
Subsequent to Conversion
Convertible preferred stock
 
 
 
 
       Series A
 
7,908

 
—

       Series B
 
1,818

 
—

       Series C
 
2,605

 
—

Redeemable common stock
 
3,829

 
—

Junior preferred stock
 
1,251

 
—

Undesignated common stock
 
—

 
17,412