7. Stock Options and Warrants
3 Months Ended
Mar. 31, 2017
Stock Options And Warrants  
Stock Options and Warrants

A summary of option activity under the Company option plans as of March 31, 2017, and changes during the period then ended is presented below:

 

   Number of Options 

Weighted

Average

Exercise Price

 

Weighted

Average

Remaining

Contractual Term

Balance outstanding at December 31, 2016   151,881   $10.01    2.47 
Granted   —      —      —   
Exercised   —      —      —   
Forfeited   —      —      —   
Cancelled or expired   —      —      —   
Balance outstanding at March 31, 2017   151,881   $10.01    2.22 
Exercisable at March 31, 2017   127,995   $10.01    2.03 

 

The following table summarizes all stock warrant activity for the three months ended March 31, 2017:

 

   Number of Warrants 

Weighted

Average

Exercise Price

 

Weighted Average

Remaining

Contractual Term

Balance outstanding at December 31, 2016    152,812   $18.94    3.30 
Granted    —      —      —   
Exercised    —      —      —   
Forfeited    —      —      —   
Expired    (1,249)   10.01    —   
Balance outstanding at March 31, 2017    151,563   $19.01    3.08 
Exercisable at March 31, 2017    151,563   $19.01    3.08