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STOCKHOLDERS' EQUITY (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended 15 Months Ended 21 Months Ended 54 Months Ended
Sep. 30, 2017
$ / shares
Jun. 30, 2017
USD ($)
$ / shares
shares
Jun. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
$ / shares
shares
Sep. 30, 2015
$ / shares
Jun. 30, 2017
USD ($)
$ / shares
shares
Jun. 30, 2017
USD ($)
$ / shares
shares
Dec. 06, 2016
USD ($)
Dec. 09, 2015
USD ($)
Dec. 10, 2014
USD ($)
Jun. 30, 2014
shares
Dec. 12, 2013
USD ($)
Dec. 07, 2012
USD ($)
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Repurchasing Amount (in Dollars) | $   $ 114 $ 313 $ 292                  
Number of options granted   0 0 0                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   2,000 2,000 22,000   2,000 2,000       22,000    
Options exercisable   2,000       2,000 2,000            
Weighted average exercise price, exercisable options (in Dollars per share) | $ / shares   $ 12.31       $ 12.31 $ 12.31            
Common Class A [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Dividends, Cash (in Dollars) | $   $ 394 $ 496 $ 800                  
Number of shares repurchased   69,636 177,998 95,251                  
Repurchasing Amount (in Dollars) | $   $ 114 $ 313 $ 292                  
Common Class A [Member] | 1989 Plan [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Number of shares authorized under Stock Option Plan   1,600,000       1,600,000 1,600,000            
Award vesting period   6 months                      
Annual award vesting, percentage   20.00%                      
Stock Option Plan expiration   10 years                      
Common Class A [Member] | 1997 Plan [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Number of shares authorized under Stock Option Plan   400,000       400,000 400,000            
Stock Option Plan expiration   10 years                      
Number of options granted   0 0 0                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   2,000       2,000 2,000            
Common Class C [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Dividends, Cash (in Dollars) | $   $ 62 $ 78 $ 124                  
Number of shares converted   180 0 60                  
Conversion ratio, shares issued as a result of stock conversion   1                      
Share Repurchase Renewal, December 2013 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Stock repurchase program, authorized amount (in Dollars) | $                       $ 2,750  
Share Repurchase Plan - December 2012 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Stock repurchase program, authorized amount (in Dollars) | $                         $ 2,750
Share Repurchase Renewal, December 2014 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Stock repurchase program, authorized amount (in Dollars) | $                   $ 2,750      
Share Repurchase Renewal, December 2015 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Stock repurchase program, authorized amount (in Dollars) | $                 $ 2,750        
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars) | $   $ 2,720       $ 2,720 $ 2,720            
Share Repurchase Renewal, December 2016 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Stock repurchase program, authorized amount (in Dollars) | $               $ 2,750          
Share Repurchase Plan, December 2012 and Renewal, December 2013, December 2014, December 2015 and December 2016 [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Repurchasing Amount (in Dollars) | $             $ 1,181            
Number of shares repurchased             491,288            
Employee [Member] | Common Class A [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Class A common stock granted     2,400                    
Class A common stock granted (in Dollars per share) | $ / shares     $ 2.66                    
Director [Member] | Common Class A [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Class A common stock granted   3,600 3,600 3,600                  
Class A common stock granted (in Dollars per share) | $ / shares   $ 1.66 $ 1.63 $ 3.24                  
Employee and Director [Member] | Common Class A [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Adjustment to additional paid in capital from shares issued with a weighted average cost basis greater than the current fair value (in Dollars) | $   $ (5) $ (43)                    
Employees [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Options exercisable   2,000 2,000 22,000   2,000 2,000            
Weighted average exercise price, exercisable options (in Dollars per share) | $ / shares   $ 12.31 $ 12.31 $ 18.72   $ 12.31 $ 12.31            
Monthly Dividends Paid [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) | $ / shares         $ 0.005 $ 0.0025              
Monthly Dividend Authorized [Member] | Scenario, Forecast [Member]                          
STOCKHOLDERS' EQUITY (Details) [Line Items]                          
Monthly dividend (in Dollars per share) | $ / shares $ 0.0025