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Equity
 6 Months Ended
Jun. 30, 2015
Equity [Abstract]  
Equity

NOTE 9—EQUITY

 

(a) Acorn Stock Options

 

A summary of stock option activity for the six months ended June 30, 2015 is as follows:

 

    Number
of Options
(in shares)		     Weighted
Average
Exercise
Price Per
Share		     Weighted
Average
Remaining
Contractual Life		     Aggregate
Intrinsic
Value		  
Outstanding at December 31, 2014     1,812,428     $ 4.51                  
Granted     662,654     $ 0.77                  
Exercised     —       —                  
Forfeited or expired     (95,164 )   $ 3.19                  
Outstanding at June 30, 2015     2,379,918     $ 3.52       5.6 years     $ —  
Exercisable at June 30, 2015     1,322,330     $ 5.01       3.8 years     $ —  

 

The fair value of the options granted ($0.52 per option during the six months ended June 30, 2015) was estimated on the grant dates using the Black-Scholes option-pricing model with the following weighted average assumptions:

 

Risk-free interest rate     2.1 %
Expected term of options     8.7 years  
Expected annual volatility     63 %
Expected dividend yield     —%  

 

(b) Stock-based Compensation Expense

 

Stock-based compensation expense included in Selling, general and administrative expenses in the Company’s Condensed Statements of Operations for the six and month period ended June 30, 2014 and 2015 was $557 and $377, respectively and was $247 and $169 for the three month period ended June 30, 2014 and 2015, respectively. In addition, $63 and $6 was recorded in the Company’s USSI subsidiary included in Discontinued Operations for the six month periods ended June 30, 2014 and 2015, respectively and $31 and $0 for the three month periods ended June 30, 2014 and 2015, respectively - See Note 5.