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Fair Value (Tables)
12 Months Ended
Dec. 31, 2016
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]  
Summary of change in Level 3 warrant liability

The following table summarizes the final valuation pertaining to the warrants that were previously included in our Level 3 warrant liabilities (in thousands):

 

Warrant liability

 

December 31, 2015

 

Balance as of December 31, 2014

 

$

9,793

 

Additions to warrant liability

 

 

15,979

 

Exercised warrants

 

 

(18,104

)

Change in fair value

 

 

(7,668

)

Balance as of December 31, 2015

 

$

 

 

Fair Value and Carrying Value of Long-term Debt

At December 31, 2016 and 2015, the aggregate fair value and the carrying value of the Company’s long-term debt were as follows (in thousands):

 

 

 

December 31, 2016

 

 

December 31, 2015

 

 

 

Fair Value

 

 

Carrying Value

 

 

Fair Value

 

 

Carrying Value

 

Debt

 

$

17,611

 

 

$

17,637

 

 

$

16,844

 

 

$

16,681