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Stockholders' Equity (Details Textual)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 15, 2017
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 ($)
Jun. 30, 2010
shares
Jun. 30, 2000
shares
Mar. 31, 2018
USD ($)
Employee
$ / shares
shares
Mar. 31, 2017
USD ($)
$ / shares
Jun. 30, 2015
Dec. 31, 2017
Employee
$ / shares
shares
Jun. 14, 2018
shares
Dec. 31, 2016
$ / shares
Jun. 15, 2016
shares
Aug. 05, 2011
Jun. 06, 2008
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                     8,000,000     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 | $                     $ 4,156 $ 5,250                
Weighted-average grant date fair values of options granted | $ / shares                           $ 3.51            
Employee stock, plan description On June 15, 2017, our Board of Directors voted to authorize an amendment to the Rights Agreement to extend the Final Expiration Date by an additional five years to September 19, 2022.                                      
Stock Options Granted [Member]                                        
Stockholders' Equity (Textual)                                        
Stock option granted during the period                     137,000     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      
Minimum [Member] | Subsequent Event [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock, shares authorized                             8,000,000          
Maximum [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock, shares authorized                                 10,000,000      
Maximum [Member] | Subsequent Event [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock, shares authorized                             11,000,000          
Investor [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 | $                     $ 24,800 $ 43,470                
Weighted-average grant date fair values of options granted | $ / shares                     $ 4.22 $ 3.51                
Weighted average remaining life of options exercisable                     2 years 5 months                  
Total unrecognized stock-based compensation related to non-vested stock options | $                     $ 915,479                  
Share-based payment, description                     Stock options covering 6,000 shares. One thousand of these options were exercised for cash, resulting in total proceeds of $4,150, and 5,000 of these options were exercised by the surrender of 2,040 shares of common stock with a fair market value of $14,994 at the time of exercise and $6 in cash.     Exercised stock options covering 11,000 shares for cash, resulting in total proceeds of $49,560.            
Exercise prices of options outstanding | $ / shares                     $ 5.36     $ 4.58   $ 3.89        
Stock Option [Member] | Minimum [Member]                                        
Stockholders' Equity (Textual)                                        
Sale of stock, per share | $ / shares                     7.08     5.33            
Exercise prices of options outstanding | $ / shares                     1.70                  
Stock Option [Member] | Maximum [Member]                                        
Stockholders' Equity (Textual)                                        
Sale of stock, per share | $ / shares                     7.80     $ 8.90            
Exercise prices of options outstanding | $ / shares                     $ 8.90                  
Stock Option [Member] | Employee [Member]                                        
Stockholders' Equity (Textual)                                        
Number of stock options exercised                     6,000                  
Proceeds from exercise of stock options | $                     $ 4,156                  
Number of employee exercised stock options | Employee                     2                  
2000 Plan [Member] | Stock Option [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock reserved for issuance under the plan                                      
Number of stock options exercised                     5,000     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 9 months            
Weighted average remaining life of options exercisable                           1 year 3 months            
2010 Plan [Member] | Stock Option [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock reserved for issuance under the plan                     5,000                  
Number of stock options exercised                     1,000     7,000            
Stock option granted during the period                     34,500     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                                  
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).                   During the second quarter of 2015, we amended our Common Stock Rights Plan by removing 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                                  
Common Stock Rights Plan [Member] | Minimum [Member]                                        
Stockholders' Equity (Textual)                                        
Ownership percentage                                   18.00% 15.00%  
Common Stock Rights Plan [Member] | Maximum [Member]                                        
Stockholders' Equity (Textual)                                        
Ownership percentage                                   20.00% 18.00%  
2017 Plan [Member] | Stock Option [Member]                                        
Stockholders' Equity (Textual)                                        
Common stock reserved for issuance under the plan                     202,500                  
Number of stock options exercised                                    
Stock option granted during the period                     102,500                
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