XML 45 R33.htm IDEA: XBRL DOCUMENT v3.3.1.900
Shareholders' Equity (Schedule of Activity in Options and Warrants) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Number of Shares Underlying Warrants and Options        
Exercised (119,381) (64,800)    
Employee Stock Option [Member]        
Number of Shares Underlying Warrants and Options        
Balance 1,570,799 1,480,599 1,117,899  
Granted/Issued 204,000 209,750 499,700  
Cancelled/Terminated (367,793) (104,750) (64,500)  
Exercised (14,800) (72,500)  
Balance 1,407,006 1,570,799 1,480,599 1,117,899
Weighted Average Exercise Price        
Balance $ 7.49 $ 7.80 $ 9.03  
Granted/Issued 5.26 5.19 5.26  
Cancelled/Terminated $ 7.70 7.83 12.81  
Exercised 5.56 4.83  
Balance $ 7.11 $ 7.49 $ 7.80 $ 9.03
Weighted Average Remaining Contractual Term (Years) 6 years 2 months 12 days 5 years 2 months 12 days 5 years 2 months 12 days 3 years 8 months 12 days
Aggregate Intrinsic Value $ 232,000      
Non-Employee Stock Options and Warrants [Member]        
Number of Shares Underlying Warrants and Options        
Balance 1,353,620 1,379,620 1,512,103  
Granted/Issued 24,000  
Cancelled/Terminated (426,083) (107,483)  
Exercised (137,174) (50,000) (25,000)  
Balance 790,363 1,353,620 1,379,620 1,512,103
Weighted Average Exercise Price        
Balance $ 5.64 $ 5.58 $ 5.56  
Granted/Issued $ 6.58  
Cancelled/Terminated $ 6.09 $ 4.45  
Exercised 4.73 $ 4.45 9.00  
Balance $ 5.56 $ 5.64 $ 5.58 $ 5.56