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INVESTMENTS (Details) - Fair Value, Assets Measured on Recurring Basis - USD ($)
$ in Thousands
Dec. 31, 2018
Jun. 30, 2018
Securities at fair value    
Total securities fair value $ 12,390  
Trading securities    
Trading securities, at fair value   $ 8,179
Available-for-sale securities    
Total available-for-sale securities [1]   7,086
Total securities fair value   15,265
Fair Value, Inputs, Level 1 [Member]    
Securities at fair value    
Total securities fair value 11,537  
Trading securities    
Trading securities, at fair value   8,179
Available-for-sale securities    
Total available-for-sale securities   7,086
Total securities fair value   15,265
Fair Value, Inputs, Level 2 [Member]    
Securities at fair value    
Total securities fair value 853  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Total securities fair value   0
Fair Value, Inputs, Level 3 [Member]    
Securities at fair value    
Total securities fair value 0  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Total securities fair value   0
Common Stock - International [Member]    
Securities at fair value    
Total securities fair value [2] 2,926  
Available-for-sale securities    
Total available-for-sale securities [3]   5,673
Common Stock - International [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities at fair value    
Total securities fair value 2,073  
Available-for-sale securities    
Total available-for-sale securities   5,673
Common Stock - International [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities at fair value    
Total securities fair value 853  
Available-for-sale securities    
Total available-for-sale securities   0
Common Stock - International [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities at fair value    
Total securities fair value 0  
Available-for-sale securities    
Total available-for-sale securities   0
Common Stock - Domestic [Member]    
Securities at fair value    
Total securities fair value 0  
Common Stock - Domestic [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities at fair value    
Total securities fair value 0  
Common Stock - Domestic [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities at fair value    
Total securities fair value 0  
Common Stock - Domestic [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities at fair value    
Total securities fair value 0  
Fixed Income Securities [Member]    
Securities at fair value    
Total securities fair value 8,798  
Trading securities    
Trading securities, at fair value [2]   7,807
Available-for-sale securities    
Total available-for-sale securities [3]   991
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities at fair value    
Total securities fair value 8,798  
Trading securities    
Trading securities, at fair value   7,807
Available-for-sale securities    
Total available-for-sale securities   991
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities at fair value    
Total securities fair value 0  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities at fair value    
Total securities fair value 0  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Mutual Funds, Domestic Equity [Member]    
Securities at fair value    
Total securities fair value 666  
Trading securities    
Trading securities, at fair value   372
Available-for-sale securities    
Total available-for-sale securities [3]   422
Mutual Funds, Domestic Equity [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities at fair value    
Total securities fair value 666  
Trading securities    
Trading securities, at fair value   372
Available-for-sale securities    
Total available-for-sale securities   422
Mutual Funds, Domestic Equity [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities at fair value    
Total securities fair value 0  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Mutual Funds, Domestic Equity [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities at fair value    
Total securities fair value $ 0  
Trading securities    
Trading securities, at fair value   0
Available-for-sale securities    
Total available-for-sale securities   0
Other Securities [Member]    
Trading securities    
Trading securities, at fair value [2]   0
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Trading securities    
Trading securities, at fair value   0
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Trading securities    
Trading securities, at fair value   0
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Trading securities    
Trading securities, at fair value   $ 0
[1] Net unrealized gains on available-for-sale securities gross and net of tax as of June 30, 2018, were $3,138 and $2,089, respectively.
[2] Prior to July 1, 2018, changes in unrealized and realized gains and losses on trading securities were included in earnings in the statement of operations.
[3] Prior to July 1, 2018, changes in unrealized gains and losses on available-for-sale securities were excluded from earnings and recorded in other comprehensive income as a separate component of shareholders' equity until realized.