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Note N - Equity (Details Textual)
 1 Months Ended 9 Months Ended 12 Months Ended
Nov. 13, 2017
USD ($)
shares
Oct. 17, 2017
USD ($)
$ / shares
shares
Sep. 22, 2017
USD ($)
$ / shares
shares
Aug. 09, 2017
USD ($)
shares
May 11, 2017
USD ($)
shares
May 02, 2017
USD ($)
$ / shares
Apr. 28, 2017
USD ($)
$ / shares
shares
Mar. 15, 2017
USD ($)
shares
Dec. 29, 2016
Nov. 18, 2016
USD ($)
$ / shares
shares
Nov. 11, 2016
USD ($)
shares
Nov. 11, 2015
USD ($)
$ / shares
shares
Oct. 29, 2015
USD ($)
$ / shares
shares
Sep. 23, 2015
$ / shares
shares
Mar. 09, 2015
Nov. 13, 2014
USD ($)
$ / shares
shares
Nov. 08, 2013
USD ($)
$ / shares
shares
Oct. 25, 2013
shares
May 31, 2017
USD ($)
$ / shares
shares
Sep. 30, 2016
USD ($)
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
$ / shares
shares
Aug. 07, 2017
Nov. 30, 2016
$ / shares
Preferred Stock, Shares Authorized                                         5,000,000      
Preferred Stock, Par or Stated Value Per Share | $ / shares                                         $ 0.0001 $ 0.0001    
Share Price | $ / shares                                         $ 1.77      
Maximum Ownership as a Result of Conversion   35.00%                                         9.99%  
Conversion of Dividends Payable, Amount Converted | $                                         $ 540,000    
Conversion of Dividends Payable, Shares Issued     150,000                                          
Dividends Payable | $                                         630,408 401,250    
Payments of Stock Issuance Costs | $                                         80,366 84,866    
Proceeds from Issuance of Common Stock | $                                         2,000,000 1,860,000    
Committed Equity Facility Amount | $           $ 5,000,000                                    
Committed Equity Facility, Term           3 years                                    
Maximum Dollar Amount of Shares to Purchase Based on Daily Volume Weighted Average Price of the Company’s Common Stock | $           $ 100,000                                    
Period for Maximum Dollar Amount of Shares to Purchase           5 days                                    
Per Share Price That Is Used in Calculation for Purchase Price under Committed Equity Facility | $ / shares           $ 3.83                                    
Percentage of Lowest VWAP That Equals or Exceeds Specified per Share Price under Committed Equity Facility           94.00%                                    
Equity Facility, Aggregate Sales Limitation, Percentage of Total Outstanding Share           19.99%                                    
Maximum Ownership of Company’s Common Stock Requirement under Committed Equity Facility Sale, Percentage           9.99%                                    
Stock Issued During Period, Shares, Issued for Services                                     61,667          
Stock Issued During Period, Value, Issued for Services | $                                     $ 156,584   $ 354,585 $ 105,000    
Stock Issued During Period As a Commitment Fee, Shares                                     55,000          
Stock Issued During Period As a Commitment Fee, Value | $                                     $ 198,000          
Stock Issued During Period, Issued for Services, Weighted Average Share Price | $ / shares                                     $ 2.54          
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures                                         1,610      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period                                         4,167 0    
Stock Issued During Period, Value, New Issues | $                                         $ 2,000,000 $ 1,860,000    
September 2015 Warrants [Member]                                                
Debt Instrument, Unamortized Discount | $                                       $ 92,199        
Fair Value Adjustment of Warrants | $                                       $ 4,607        
September 2017 [Member]                                                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 3.60                                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     138,889                                          
Term Of Warrant     5 years                                          
Promissory Note [Member]                                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                           69,445                    
Warrants Issued Under PISPA [Member]                                                
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | $                                           7,478    
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value | $                                           $ 0    
Warrants Issued Under PISPA [Member] | Fair Value, Inputs, Level 3 [Member]                                                
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances | $                                 $ 325,891              
Common Stock [Member]                                                
Stock Issued During Period, Shares, New Issues                                         555,556 516,667    
Stock Issued During Period, Shares, Issued for Services                                         117,849 41,667    
Stock Issued During Period, Value, Issued for Services | $                                         $ 12 $ 4    
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures                                         11,244 27,248    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period                                         1,610      
Stock Issued During Period, Value, New Issues | $                                         $ 56 $ 52    
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]                                                
Fair Value Assumptions, Expected Term                             5 years                  
Private Investor SPA [Member]                                                
Stock Issued During Period, Shares, New Issues                               664,584                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                                 $ 6              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                               996,877                
Stock Issued During Period, Value, New Issues | $                                 $ 3,697,100              
Term Of Warrant                                 3 years              
Proceeds from Issuance of Private Placement | $                               $ 1,595,000                
Placement Agent Warrants [Member]                                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                                 82,158              
Commissions and Fees, Percent of Gross Proceeds                                 8.00%              
Private Investor SPA [Member]                                                
Stock Issued During Period, Shares, New Issues                                   1,026,972            
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                               $ 3.60               $ 3.60
Private Investor SPA [Member] | Common Stock [Member]                                                
Stock Issued During Period, Shares, New Issues                                   1,026,972            
Private Investor SPA [Member] | Warrant [Member]                                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                                   1,026,972            
Consultancy Firm [Member]                                                
Share Price | $ / shares                                           $ 2.52    
Stock Issued During Period, Shares, Issued for Services                                           41,667    
Stock Issued During Period, Value, Issued for Services | $                                           $ 105,000    
Conversion of Series A-1 Shares into Common Stock [Member]                                                
Conversion of Stock, Shares Converted   27,404 27,404                                          
Conversion of Stock, Shares Issued   761,222 761,222                                          
Preferred Stock, Conversion Price | $ / shares   $ 3.60 $ 3.60                                          
Director and Executive Officer [member]                                                
Stock Issued During Period, Shares, New Issues     277,778       277,778                                  
Share Price | $ / shares             $ 3.60                                  
Initial Conversion Price | $ / shares             $ 3.60                                  
Conversion of Dividends Payable, Amount Converted | $     $ 540,000                                          
Conversion of Dividends Payable, Shares Issued     150,000                                          
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 3.60                                          
Proceeds from Issuance of Common Stock | $     $ 1,000,000       $ 1,000,000                                  
Stock Issued During Period, Shares, Cash Issuance and Conversion of Dividend Payable     427,778                                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     138,889                                          
Stock and Warrants Issued During Period, Vaue | $     $ 1,540,000                                          
Director [Member]                                                
Stock Issued During Period, Shares, Issued for Services 2,276     5,148 1,925     1,895                                
Stock Issued During Period, Value, Issued for Services | $ $ 4,005     $ 18,017 $ 5,005     $ 5,003                                
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures                                           18,914    
Stock Granted, Value, Share-based Compensation, Net of Forfeitures | $                                           $ 45,000    
Chief Executive Officer [Member]                                                
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures                                           8,334    
Stock Granted, Value, Share-based Compensation, Net of Forfeitures | $                                           $ 17,000    
Wong Kwok Fong [Member]                                                
Stock Issued During Period, Shares, New Issues                   516,667 516,667                          
Share Price | $ / shares                   $ 3.60                            
Proceeds from Issuance of Common Stock | $                   $ 1,860,000 $ 1,860,000                          
Reverse Stock Split [Member]                                                
Stockholders' Equity Note, Stock Split, Conversion Ratio                 12                              
Series A-1 Convertible Preferred Stock [Member]                                                
Preferred Stock, Shares Authorized                                         100,000 100,000    
Preferred Stock, Par or Stated Value Per Share | $ / shares                                         $ 0.0001 $ 0.0001    
Preferred Stock, Shares Outstanding                                         62,596 90,000    
Stock Issued During Period, Shares, New Issues                       5,500 84,500                      
Share Price | $ / shares                       $ 100 $ 100                      
Proceeds from Issuance of Convertible Preferred Stock | $                       $ 550,000 $ 8,450,000                      
Initial Conversion Price | $ / shares                       $ 3.60 $ 3.60                      
Preferred Stock, Dividend Rate, Percentage                       6.00%                        
Period Preceding the Dividend Payment Date                       10 days                        
Conversion of Dividends Payable, Amount Converted | $   $ 27,404 $ 540,000                                          
Conversion of Dividends Payable, Shares Issued   761,222 150,000                                          
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 3.60 $ 3.60                                          
Dividends Payable | $                                         $ 236,658 $ 270,000    
Preferred Stock, Shares Issued                                         62,596 90,000    
Series A-1 Convertible Preferred Stock [Member] | Maximum [Member]                                                
Maximum Ownership as a Result of Conversion                       9.99%                        
Series B-1 Convertible Preferred Stock [Member]                                                
Preferred Stock, Shares Authorized                                         105,000 105,000    
Preferred Stock, Par or Stated Value Per Share | $ / shares                                         $ 0.0001 $ 0.0001    
Preferred Stock, Shares Outstanding                                         105,000 105,000    
Stock Issued During Period, Shares, New Issues                       105,000                        
Share Price | $ / shares                       $ 100                        
Proceeds from Issuance of Convertible Preferred Stock | $                       $ 10,500,000                        
Preferred Stock, Dividend Rate, Percentage                       2.50%                        
Period Preceding the Dividend Payment Date                       10 days                        
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                       $ 3.60                        
Dividends Payable | $                                         $ 393,750 $ 131,250    
Liquidation Value Per Share | $ / shares                       $ 100                        
Preferred Stock, Shares Issued                                         105,000 105,000    
Series B-1 Convertible Preferred Stock [Member] | Maximum [Member]                                                
Maximum Ownership as a Result of Conversion                       9.99%                        
September 2015 Warrants [Member]                                                
Initial Conversion Price | $ / shares                           $ 3.60                    
Term Of Warrant                           5 years