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Equity (Tables)
 12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Schedule of Stock Options 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):

 

    2016     2015  
Risk-free interest rate     1.5 %     2.1 %
Expected term of options, in years     6.5       8.6  
Expected annual volatility     80 %     63 %
Expected dividend yield     — %     — %
Determined weighted average grant date fair value per option   $ 0.11     $ 0.51  
Summary of Stock Option Plans

A summary of the Company’s option plans as of December 31, 2016 and 2015, as well as changes during each of the years then ended, is presented below:

 

    2016     2015  
    Number of Options
(in shares)		     Weighted Average Exercise Price     Number of Options
(in shares)		     Weighted Average Exercise Price  
Outstanding at beginning of year     2,364,918     $ 3.51       1,812,428     $ 4.51  
Granted at market price     65,000       0.15       687,654       0.75  
Exercised     —       —       —       —  
Forfeited or expired     (379,549 )     2.29       (135,164 )     2.91  
Outstanding at end of year     2,050,369       3.62       2,364,918       3.51  
Exercisable at end of year     2,004,534     $ 3.69       1,778,503     $ 4.16  
Summary of Information Regarding to Options Outstanding and Exercisable

Summary information regarding the options outstanding and exercisable at December 31, 2016 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)        
$0.14 – $1.06       677,301       5.8     $ 0.74       644,800     $ 0.76  
$1.68 – $2.49       307,985       4.7     $ 1.74       294,651     $ 1.75  
$3.51 – $5.00       279,368       3.5     $ 4.22       279,368     $ 4.22  
$5.05 – $5.91       320,000       1.4     $ 5.21       320,000     $ 5.21  
$6.31 - $7.57       302,356       3.2     $ 6.90       302,356     $ 6.97  
$7.60 - $11.42       163,359       2.8     $ 8.82       163,359     $ 8.82  
        2,050,369                       2,004,534          
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,		  
    2016     2015  
Cost of sales*   $ —     $ 16  
Research and development expense*     —       4  
Selling, general and administrative expense*     89       641  
Total   $ 89     $ 661  

 

* Includes $16, $4 and $59 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. 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, 2016 and 2015, as well as changes during the years then ended, is presented below:

 

    2016     2015  
    Number of Options
(in shares)*		     Weighted Average Exercise Price      Number of Options
(in shares)* 		    Weighted Average Exercise Price  
Outstanding at beginning of year     239,524     $ 1.65       239,524     $ 1.67  
Granted at fair value     —     $ —       —     $ —  
Exercised     (239,524 )   $ 1.63       —     $ —  
Forfeited     —     $ —       —     $ —  
Outstanding at end of year     —     $ —       239,524     $ 1.65  
Exercisable at end of year     —     $ —       239,524     $ 1.65  

 

*The exercise price of 91,754 of these options was NIS 9.38 translated to US dollars using following exchange rates: NIS 3.89 for December 31, 2014, NIS 3.90 for December 31, 2015, and 3.97 for the Closing Date.
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:

 

    2016     2015  
    Number of shares underlying warrants     Weighted Average Exercise Price     Number of shares underlying warrants     Weighted Average Exercise Price  
Outstanding at beginning of year     2,619,423     $ 1.48       2,642,423     $ 1.50  
Granted     35,000     $ 0.13       —       —  
Exercised     —       —       —       —  
Forfeited or expired     —       —       (23,000 )   $ 3.68  
Outstanding and exercisable at end of year     2,654,423     $ 1.46       2,619,423     $ 1.48  
Schedule of Warrant Fair Value Assumptions Estimated Using Black-Scholes Pricing Model

The fair value of the warrants granted ($0.08 per warrant) was estimated on the grant dates using the Black-Scholes option-pricing model with the following weighted average assumptions:

 

Risk-free interest rate     1.79 %
Expected term of warrants     7.0 years  
Expected annual volatility     78 %
Expected dividend yield     — %