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Stock-Based Compensation (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
May 10, 2016
Jun. 19, 2015
May 15, 2015
Jan. 02, 2015
Jun. 30, 2015
Jul. 31, 2014
Jan. 31, 2014
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Description of plan

Shareholders approved an increase of 1,500,000 shares in the number of shares available for option awards under the 2011 Equity Incentive Plan.

 

Shareholders approved (1) an increase of 2,000,000 shares in the number of shares available for option awards under the 2011 Equity Incentive Plan, and (2) an Employee Stock Purchase Plan, with an initial 250,000 shares with annual increases of shares available equal to the lesser of (i) 1% of outstanding shares or (ii) 100,000 shares.

               
Stock-based compensation                 $ 3,367 $ 2,687 $ 1,475
Expected terms (in years)                 6 years 3 months    
Risk-free interest rate                   2.16%  
Expected dividend rate                 0.00% 0.00% 0.00%
Outstanding balance, loan                 $ 2 $ 5  
Issued common stock for services, shares                 82,000 23,136  
Issued common stock for services, amount                 $ 272 $ 324 $ 178
General And Administrative [Member]                      
Stock-based compensation                 $ 2,475 $ 1,523 $ 736
Minimum [Member]                      
Expected terms (in years)                   6 years 3 months 1 year 6 months
Volatility rate                 47.60% 47.50% 50.00%
Risk-free interest rate                 1.40% 1.93% 0.30%
Loans bear interest                 1.27%    
Maximum [Member]                      
Expected terms (in years)                   6 years 6 months 6 years 6 months
Volatility rate                 48.20% 50.40% 61.20%
Risk-free interest rate                 2.03% 2.21% 2.20%
Loans bear interest                 1.91%    
Restricted Stock Units [Member]                      
Period of recognized compensation cost                 2 years 7 months 17 days    
Total non vested unrecognized compensation cost                 $ 1,551    
Consultant [Member]                      
Stock-based compensation               $ 55     $ 235
Number of vested shares               98,681     232,003
Description of vesting terms              

All unvested options for this employee were terminated when this employee ceased full-time employment with the Company.

   

All unvested options for employees were terminated when they ceased full-time employment with the Company.

Outside Attorney [Member]                      
Number of options granted                 30,000    
Exercisable terms                 4 years    
Exercise price (in dollars per share)                 $ 5.23    
Percentage of fair value common stock granted                 125.00%    
Fair value of options                 $ 53    
Share price (in dollars per share)                 $ 1.77    
Expected terms (in years)                 6 years 3 months    
Volatility rate                 48.20%    
Risk-free interest rate                 1.87%    
Expected dividend rate                 0.00%    
Issued common stock for services, shares                     21,215
Issued common stock for services, amount                     $ 170
Issued common stock for services, per share                     $ 7.00
Balance common stock for services, per share                     $ 9.00
Mr. Jonathan Will McGuire [Member]                      
Stock-based compensation   $ 390                  
Period of recognized compensation cost             3 years        
Number of options granted         50,753   125,000       27,344
Exercise price (in dollars per share)       $ 4.75 $ 4.75   $ 4.25        
Fair value of options                     $ 393
Share price (in dollars per share)                     $ 10.26
Volatility rate                     50.00%
Expected dividend rate                     0.00%
Exercise of stock options to purchase shares       59,063 150,000            
Number of shares surrendered                     12,055
Value of shares surrendered                     $ 124
Mr. Jonathan Will McGuire [Member] | Employment Agreement [Member]                      
Number of options granted                 420,000    
Fair value of stock option granted                 $ 2,574    
Stock option recognized                 $ 645 $ 240  
Mr. Jonathan Will McGuire [Member] | Employment Agreement [Member] | Restricted Stock Units [Member]                      
Description of vesting terms                

With 25% vesting on the first anniversary of the grant date, and the remainder vesting thereafter in twelve equal installments of 6.25% on the quarterly anniversaries of the grant date.

   
Number of options granted                 190,000    
Fair value of stock option granted                 $ 2,362    
Stock option recognized                 $ 591 220  
Exercise price of the options (in dollars per share)                 $ 12.43    
Vesting period                 4 years    
Robert J. Greenberg [Member] | General And Administrative [Member]                      
Issued common stock for services, shares           25,000          
Issued common stock for services, amount           $ 175          
Issued common stock for services, per share           $ 7.00          
2011 Equity Incentive Plan [Member]                      
Number of shares authorized                 3,500,000    
Number of shares options granted                 7,500,000    
Aggregate exercisable intrinsic value                 $ 0 $ 1,294  
Total unrecognized compensation cost of options                 $ 6,240    
Period of recognized compensation cost                 2 years 7 months 13 days    
Exercisable terms                 10 years    
Employee Stock Purchase Plan [Member]                      
Description of plan        

Under the plan, shares of the Company's common stock may be purchased at six-month intervals at 85% of the lower of the closing fair market value of the common stock (i) on the first trading day of the offering period or (ii) on the last trading day of the purchase period. An employee may purchase in any one calendar year shares of common stock having an aggregate fair market value of up to $25,000 determined as of the first trading day of the offering period. Additionally, a participating employee may not purchase more than 100,000 shares of common stock in any one offering period.

           
Number of shares issued                 241,714