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Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Schedule of Fair Value Assumptions Estimated Using Black-Scholes Pricing Model

The Company utilized the Black-Scholes option-pricing model to estimate fair value, utilizing the following assumptions for the respective years (all in weighted averages):

 

    2014     2015  
Risk-free interest rate     2.1 %     2.1 %
Expected term of options, in years     7.0       8.6  
Expected annual volatility     64 %     63 %
Expected dividend yield     — %     — %
Determined weighted average grant date fair value per option   $ 1.36     $ 0.51  
Summary of Stock Option Plans

A summary of the Company’s option plans as of December 31, 2014 and 2015, as well as changes during each of the years then ended, is presented below:

 

    2014     2015  
    Number of Options
(in shares)		     Weighted Average Exercise Price     Number of Options
(in shares)		     Weighted Average Exercise Price  
Outstanding at beginning of year     1,401,658     $ 5.49       1,812,428     $ 4.51  
Granted at market price     664,103       2.14       687,654       0.75  
Exercised *     (33,938 )     2.51       —       —  
Forfeited or expired     (219,395 )     3.96       (135,164 )     2.91  
Outstanding at end of year     1,812,428       4.51       2,364,918       3.51  
Exercisable at end of year     1,128,434     $ 5.56       1,778,503     $ 4.16  

 

* All shares issued in connection with option exercises were newly issued shares.
Summary of Option Exercises between Cashless Net Exercises and Cash Exercises

The breakdown of option exercises between cashless net exercises and cash exercises is as follows the year ended December 31, 2014 (there were no option exercises in the year ended December 31, 2015):

 

    Shares granted in net exercise of options     Options forfeited in net exercise of options     Total net exercise options     Weighted average exercise price for net exercise options     Options exercised for cash     Weighted average exercise price for options exercised for cash  
Year ended December 31, 2014     33,938       76,062       110,000     $ 2.51       —       —  
Summary Information Regarding to Options Outstanding and Exercisable

Summary information regarding the options outstanding and exercisable at December 31, 2015 is as follows:

 

    Outstanding     Exercisable  
Range of Exercise Prices   Number Outstanding     Weighted Average Remaining Contractual Life     Weighted Average Exercise Price     Number Exercisable    

Weighted

Average

Exercise

Price

  
    (in shares)     (in years)           (in shares)        
$0.20 – $1.06     802,454       7.8     $ 0.79       362,025     $ 0.85  
$1.68 – $2.56     342,152       5.6     $ 1.76       288,818     $ 1.77  
$3.51 – $5.00     426,264       3.4     $ 4.19       361,946     $ 4.22  
$5.05 – $5.91     320,000       2.4     $ 5.21       320,000     $ 5.21  
$6.31 - $7.57     310,689       4.1     $ 6.95       290,689     $ 6.91  
$7.60 - $11.42     163,359       3.8     $ 8.82       155,025     $ 8.87  
      2,364,918                       1,778,503          
Stock-Based Compensation Expense Included In Statements of Operations

Stock-based compensation expense included in the Company’s Consolidated Statements of Operations was:

 

    Year ended
December 31,		  
    2014     2015  
Cost of sales*   $ 2     $ 16  
Research and development expense*     33       4  
Selling, general and administrative expense*     830       641  
Total   $ 865     $ 661  

 

* Includes $16, $4 and $59 in in Cost of sales, Research and development expense and Selling, general and administrative expense, respectively, for the year ended December 31, 2015 with respect to DSIT. Includes $2 in Cost of sales in the year ended December 31, 2014 with respect to DSIT. See Note 4 with respect to stock-based compensation expense associated with discontinued operations.
Summary Status of DSIT Plan

A summary status of the DSIT Plan as of December 31, 2014 and 2015, as well as changes during the years then ended, is presented below:

 

    2014   2015  
    Number of Options
(in shares)		     Weighted Average Exercise Price       Number of Options
(in shares)  		     Weighted Average Exercise Price  
Outstanding at beginning of year     243,924     $ 1.78       239,524     $ 1.67  
Granted at fair value     —     $ —       —     $ —  
Exercised     —     $ —       —     $ —  
Forfeited     (4,400 )   $ 2.41       —     $ —  
Outstanding at end of year     239,524     $ 1.67       239,524     $ 1.65  
Exercisable at end of year     101,904     $ 1.45       239,524     $ 1.65  
Summary Information Regarding Options Plan Outstanding and Exercisable

Summary information regarding the options under the Plan outstanding and exercisable at December 31, 2015 is as follows:

 

    Outstanding     Exercisable  
Range of Exercise Prices   Number Outstanding     Weighted Average Remaining Contractual Life     Weighted Average Exercise Price     Number Exercisable     Weighted Average Exercise Price  
    (in shares)     (in years)           (in shares)        
$1.05 – $1.26     147,770       2.6     $ 1.18       147,770     $ 1.18  
$2.40*     91,754       2.6     $ 2.40       91,754     $ 2.40  
      239,524             $ 1.65       239,524     $ 1.65  

 

*The exercise price of these options are NIS 9.38 translated to US dollars using the year end exchange rates (NIS 3.89 and NIS 3.90 for the years ended December 31, 2014 and 2015, respectively).
Summary of Warrant Activity

The Company has issued warrants at exercise prices equal to or greater than market value of the Company’s common stock at the date of issuance. A summary of warrant activity follows:

 

    2014     2015  
    Number of shares underlying warrants     Weighted Average Exercise Price     Number of shares underlying warrants     Weighted Average Exercise Price  
Outstanding at beginning of year     285,281     $ 3.18       2,642,423     $ 1.50  
Granted     2,357,142     $ 1.30       —       —  
Exercised     —       —       —       —  
Forfeited or expired     —       —       (23,000 )   $ 3.68  
Outstanding and exercisable at end of year     2,642,423     $ 1.50       2,619,423     $ 1.48