XML 35 R22.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis
The following table presents the changes in the Level 3 instruments measured at fair value on a recurring basis for the three months ended March 31, 2014 (in thousands):
 
 
 
2014
Warrant liability balance at January 1
 
$
4,446

Change in fair value
 
6,632

Warrant liability balance at March 31
 
$
11,078