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Stockholders' Equity (Details Textual)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 03, 2016
USD ($)
$ / shares
shares
Jan. 06, 2016
USD ($)
$ / shares
Oct. 28, 2015
USD ($)
Jun. 30, 2010
shares
Jun. 30, 2000
shares
Sep. 30, 2016
$ / shares
shares
Sep. 30, 2015
shares
Sep. 30, 2016
USD ($)
Employee
Director
$ / shares
shares
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Employee
$ / shares
shares
Dec. 31, 2014
$ / shares
Jun. 30, 2001
shares
Stockholders' Equity (Textual)                        
Potential issuance or sale of equity | $     $ 10,000,000                  
Gross proceeds | $ $ 5,900,000 $ 5,958,000                    
Net proceeds | $ $ 5,313,000                      
Common stock shares sold 1,123,810                      
Sale of stock, per share | $ / shares $ 5.25                      
Closing share price | $ / shares   $ 8.08                    
Common stock, shares authorized           10,000,000   10,000,000   8,000,000    
Proceeds from exercise of stock options | $               $ 31,975 $ 120,210      
Employee [Member]                        
Stockholders' Equity (Textual)                        
Common stock reserved for issuance under the plan           261,000   261,000        
Stock Option [Member]                        
Stockholders' Equity (Textual)                        
Number of stock options exercised           15,000 14,000          
Exercise prices of options outstanding | $ / shares           $ 3.97   $ 3.97   $ 3.57 $ 3.42  
Aggregate intrinsic value of options exercised | $               $ 32,000   $ 110,000    
Weighted-average grant date fair values of options granted | $ / shares               $ 4.16   $ 3.46    
Total unrecognized stock-based compensation related to non-vested stock options | $               $ 238,047        
Outstanding non-vested stock options cost expected to be recognized | $               $ 25,270        
Number of director exercised stock options | Director               1        
Share-based payment, description               The aggregate of 16,000 shares, of which 15,000 were exercised during the three-month period ended September 30, 2016. Six thousand of these options were exercised for cash, resulting in total proceeds of $31,900, and 10,000 of these options were exercised by the surrender of 7,334 shares of common stock with a fair market value of $57,425 at the time of exercise and $75 in cash.        
Stock Option [Member] | 44,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Stock option granted during the period               44,000        
Stock Option [Member] | 16,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Stock option granted during the period                   16,000    
Stock Option [Member] | Minimum [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares           1.70   $ 1.70        
Stock Option [Member] | Minimum [Member] | 44,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares           6.70   6.70        
Stock Option [Member] | Minimum [Member] | 16,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares                   $ 6.05    
Stock Option [Member] | Maximum [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares                   7.54    
Stock Option [Member] | Maximum [Member] | 44,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares           $ 8.21   $ 8.21        
Stock Option [Member] | Maximum [Member] | 16,000 stock options granted [Member]                        
Stockholders' Equity (Textual)                        
Exercise prices of options outstanding | $ / shares                   $ 7.54    
Stock Option [Member] | Employee [Member]                        
Stockholders' Equity (Textual)                        
Number of stock options exercised               16,000   28,000    
Proceeds from exercise of stock options | $               $ 31,900   $ 120,210    
Number of employee exercised stock options | Employee               1   11    
2000 Plan [Member] | Stock Option [Member]                        
Stockholders' Equity (Textual)                        
Common stock reserved for issuance under the plan           0   0        
Number of stock options exercised               0   (26,000)    
Stock option granted during the period               0   0    
2000 Plan [Member] | Stock Option [Member] | Employee [Member]                        
Stockholders' Equity (Textual)                        
Stock option and incentive plan description        
No less than 85% of fair market value on the date of grant in the case of non-qualified stock options.
             
Common stock reserved for issuance under the plan         250,000             500,000
Stock option expiration period         10 years     4 years 7 months        
Weighted average remaining life of options exercisable               2 years 6 months        
2010 Plan [Member] | Stock Option [Member]                        
Stockholders' Equity (Textual)                        
Common stock reserved for issuance under the plan           150,500   150,500        
Number of stock options exercised               (16,000)   (2,000)    
Stock option granted during the period               44,000   16,000    
2010 Plan [Member] | Stock Option [Member] | Employee [Member]                        
Stockholders' Equity (Textual)                        
Stock option and incentive plan description      
No less than 85% of fair market value on the date of grant in the case of non-qualified stock options.
               
Common stock reserved for issuance under the plan       300,000                
Stock option expiration period       10 years       4 years 7 months        
Weighted average remaining life of options exercisable               2 years 6 months