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STOCKHOLDERS' EQUITY (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 06, 2016
Dec. 09, 2015
Dec. 10, 2014
Dec. 12, 2013
Dec. 07, 2012
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Repurchasing Amount   $ 14 $ 30          
Options outstanding (in Shares)   2,000            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)   2,000            
Weighted average exercise price, exercisable options (in Dollars per share)   $ 12.31            
Number of options exercised (in Shares)   0            
Number of options forfeited (in Shares)   0            
Number of options granted (in Shares)   0            
Share-based Compensation   $ 0 $ 0          
Common Class A [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Number of shares repurchased (in Shares)   9,199 14,947          
Repurchasing Amount   $ 14 $ 30          
Share Repurchase Plan - December 2012 [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Stock repurchase program, authorized amount               $ 2,750
Share Repurchase Renewal, December 2014 [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Stock repurchase program, authorized amount           $ 2,750    
Share Repurchase Renewal, December 2013 [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Stock repurchase program, authorized amount             $ 2,750  
Share Repurchase Renewal, December 2016 [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Stock repurchase program, authorized amount       $ 2,750        
Share Repurchase Renewal, December 2015 [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Stock repurchase program, authorized amount         $ 2,750      
Monthly Dividend Authorized [Member] | Scenario, Forecast [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Monthly Dividend Declared (in Dollars per share) $ 0.0025              
Monthly Dividends Paid [Member]                
STOCKHOLDERS' EQUITY (Details) [Line Items]                
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)   $ 0.0025