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8 - SHAREHOLDER'S EQUITY (Details) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
8 - SHAREHOLDER'S EQUITY (Details) [Line Items]            
Preferred Stock, Shares Authorized 5,000,000     5,000,000 5,000,000  
Preferred Stock, Par or Stated Value Per Share (in Dollars per share) $ 0.001     $ 0.001 $ 0.001  
Preferred Stock, Shares Issued 0     0 0  
Preferred Stock, Shares Outstanding 0     0 0  
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) $ 0.03 $ 0.025 $ 0.025      
Common Class A [Member]            
8 - SHAREHOLDER'S EQUITY (Details) [Line Items]            
Common Stock, Shares Authorized 20,000,000     20,000,000 20,000,000  
Common Stock, Par or Stated Value Per Share (in Dollars per share) $ 0.001     $ 0.001 $ 0.001  
Common Stock, Shares, Outstanding 4,867,235     4,867,235 4,808,235  
Common Stock, Shares, Issued 4,867,235     4,867,235 4,808,235  
Common Stock, Voting Rights       one vote for each share held    
Stock Issued During Period, Shares, New Issues       59,000 40,000  
Common Class B [Member]            
8 - SHAREHOLDER'S EQUITY (Details) [Line Items]            
Common Stock, Shares Authorized 762,612     762,612 762,612  
Common Stock, Par or Stated Value Per Share (in Dollars per share) $ 0.001     $ 0.001 $ 0.001  
Common Stock, Shares, Outstanding 762,612     762,612 762,612  
Common Stock, Shares, Issued 762,612     762,612 762,612  
Common Stock, Voting Rights         ten votes for each share held  
Convertible Common Stock, Terms of Conversion         convertible at any time at the election of the shareholder into one share of Class A common stock, subject to certain adjustments  
Common Stock [Member] | Common Class A [Member]            
8 - SHAREHOLDER'S EQUITY (Details) [Line Items]            
Common Stock, Shares, Outstanding 4,867,235     4,867,235 4,808,235 4,768,235
Common Stock, Shares, Issued 4,867,325     4,867,325 4,808,235  
Common Stock [Member] | Common Class B [Member]            
8 - SHAREHOLDER'S EQUITY (Details) [Line Items]            
Common Stock, Shares, Outstanding 762,612     762,612 762,612 762,612
Common Stock, Shares, Issued 762,612     762,612 762,612