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Stockholders' Equity (Details Textual)
 1 Months Ended 9 Months Ended 12 Months Ended
Feb. 03, 2016
USD ($)
$ / shares
shares
Sep. 30, 1995
$ / shares
Dec. 21, 2017
USD ($)
$ / shares
shares
Jul. 27, 2017
USD ($)
Investors
$ / shares
shares
Jun. 30, 2017
shares
Oct. 21, 2016
USD ($)
$ / shares
shares
Oct. 28, 2015
USD ($)
Jun. 30, 2010
shares
Jun. 30, 2000
shares
Sep. 30, 2018
USD ($)
Employee
$ / shares
shares
Sep. 30, 2017
USD ($)
$ / shares
Dec. 31, 2017
Employee
$ / shares
shares
Jun. 14, 2018
shares
Dec. 31, 2016
$ / shares
Jun. 15, 2016
shares
Jun. 30, 2001
shares
Stockholders' Equity (Textual)                                
Potential issuance or sale of equity | $             $ 10,000,000                  
Gross proceeds | $ $ 5,900,000   $ 3,050,000                          
Net proceeds | $ $ 5,313,000   $ 2,734,000                          
Common stock shares sold 1,123,810   417,807                          
Sale of stock, per share | $ / shares $ 5.25   $ 7.30                          
Common stock, shares authorized                   11,000,000   8,000,000        
Stock option and incentive plan, description                   We currently match 100% of the first 3% of each employee's salary that is contributed to the Plan and 50% of the next 2% of each employee's salary that is contributed to the Plan.            
Proceeds from exercise of stock options | $                   $ 15,500 $ 16,500          
Stock Options Granted [Member]                                
Stockholders' Equity (Textual)                                
Stock option granted during the period                   167,000   141,000        
Private Placement [Member]                                
Stockholders' Equity (Textual)                                
Gross proceeds | $           $ 3,464,000                    
Net proceeds | $           $ 3,161,000                    
Common stock shares sold           659,880                    
Closing share price | $ / shares           $ 5.25                    
Minimum [Member]                                
Stockholders' Equity (Textual)                                
Common stock, shares authorized                         8,000,000   8,000,000  
Maximum [Member]                                
Stockholders' Equity (Textual)                                
Common stock, shares authorized                         11,000,000   10,000,000  
Investors [Member]                                
Stockholders' Equity (Textual)                                
Gross proceeds | $       $ 1,050,000                        
Net proceeds | $       $ 1,034,000                        
Number of related investors | Investors       2                        
Common stock shares issued       200,000                        
Closing share price | $ / shares       $ 5.25                        
Stock Option [Member]                                
Stockholders' Equity (Textual)                                
Number of employee exercised stock options | Employee                       6        
Aggregate intrinsic value of options exercised | $                   $ 46,790 $ 43,470          
Weighted-average grant date fair values of options granted | $ / shares                   $ 4.21 $ 3.51          
Total unrecognized stock-based compensation related to non-vested stock options | $                   $ 795,891            
Share-based payment, description                   Stock options covering 12,000 shares. Four thousand of these options were exercised for cash, resulting in total proceeds of $15,490, and 8,000 of these options were exercised by the surrender of 3,469 shares of common stock with a fair market value of $25,040 at the time of exercise and $10 in cash.   Exercised stock options covering 11,000 shares for cash, resulting in total proceeds of $49,560.        
Exercise prices of options outstanding | $ / shares                   $ 5.47   $ 4.58   $ 3.89    
Weighted average remaining life of unrecognized stock-based compensation related to non-vested                   1 year 11 months            
Stock Option [Member] | Minimum [Member]                                
Stockholders' Equity (Textual)                                
Sale of stock, per share | $ / shares                   $ 6.81   5.33        
Exercise prices of options outstanding | $ / shares                   1.70            
Stock Option [Member] | Maximum [Member]                                
Stockholders' Equity (Textual)                                
Sale of stock, per share | $ / shares                   8.43   $ 8.90        
Exercise prices of options outstanding | $ / shares                   $ 8.90            
Stock Option [Member] | Employee [Member]                                
Stockholders' Equity (Textual)                                
Number of stock options exercised                   12,000            
Proceeds from exercise of stock options | $                   $ 15,490            
Number of employee exercised stock options | Employee                   4            
2000 Plan [Member] | Stock Option [Member]                                
Stockholders' Equity (Textual)                                
Common stock reserved for issuance under the plan                              
Number of stock options exercised                   10,000   4,000        
Stock option granted during the period                            
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 5 years 6 months            
Weighted average remaining life of options exercisable                   9 months            
Option expiry date                 Feb. 28, 2010              
2010 Plan [Member] | Stock Option [Member]                                
Stockholders' Equity (Textual)                                
Common stock reserved for issuance under the plan                   1,000            
Number of stock options exercised                   2,000   7,000        
Stock option granted during the period                   44,500   141,000        
2010 Plan [Member] | Stock Option [Member] | Employee [Member]                                
Stockholders' Equity (Textual)                                
Common stock reserved for issuance under the plan               300,000                
Stock option expiration period               10 years                
Share-based payment, description               The 2010 Plan expires in June 2020, after which date no further options could be granted under the 2010 Plan.                
Option expiry date               Jun. 30, 2020                
Common Stock Rights Plan [Member]                                
Stockholders' Equity (Textual)                                
Share-based payment, description   At any time after a person or group becomes an Acquiring Person and prior to the acquisition by such person or group of 50% or more of the outstanding common stock, the Board of Directors of the Company may exchange the Rights (other than Rights owned by such person or group which have become void), in whole or in part, at an exchange ratio of one share of common stock per Right (subject to adjustment).                            
Common stock purchase price | $ / shares   $ 70.00               $ 70.00            
Employee stock, plan description   The Rights (as amended) become exercisable and transferable apart from the common stock upon the earlier of i) 10 days following a public announcement that a person or group (Acquiring Person) has, without the prior consent of the Continuing Directors (as such term is defined in the Rights Agreement), acquired beneficial ownership of 20% or more of the outstanding common stock or ii) 10 days following commencement of a tender offer or exchange offer the consummation of which would result in ownership by a person or group of 20% or more of the outstanding common stock (the earlier of such dates being called the Distribution Date).               Our Board of Directors also has voted to authorize amendments to increase the ownership threshold for determining "Acquiring Person" status to 20%. During the second quarter of 2015, our Board of Directors also voted to authorize an amendment to remove a provision that prevented a new group of directors elected following the emergence of an Acquiring Person (an owner of more than 20% of our stock) from controlling the Rights Plan by maintaining exclusive authority over the Rights Plan with pre-existing directors.            
Sale of common stock, description   The Company should consolidate or merge with any other entity and the Company were not the surviving company, or, if the Company were the surviving company, all or part of the Company's common stock were changed or exchanged into the securities of any other entity, or if more than 50% of the Company's assets or earning power were sold.                            
Outstanding rights price per share | $ / shares   $ 0.005                            
2017 Plan [Member] | Stock Option [Member]                                
Stockholders' Equity (Textual)                                
Common stock reserved for issuance under the plan                   188,500            
Number of stock options exercised                            
Stock option granted during the period                   122,500          
2017 Plan [Member] | Stock Option [Member] | Employee [Member]                                
Stockholders' Equity (Textual)                                
Common stock reserved for issuance under the plan         300,000                      
Stock option expiration period         10 years                      
Option expiry date         Mar. 31, 2027