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Accounts Receivable, Net And Other Receivables And Finance Loans Receivable, Net (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Jul. 31, 2022
Jun. 30, 2021
Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Proceeds from sale of equity method investments   $ 819 $ 0 $ 819 $ 0      
Remaining receivable amount   24,435   24,435     $ 26,583  
Accounts receivable, trade, gross   $ 10,479   $ 10,479     10,760  
Cedar Cellular [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Equity ownership percentage   7.625%   7.625%        
Cedar Cellular [Member] | 8.625% Notes [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Interest rate   8.625%   8.625%        
Carbon Loan [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accounts receivable, trade, gross               $ 3,000
Allowance for doubtful loans receivable             3,000  
Bank Frick [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Proceeds from sale of equity method investments $ 7,500              
Bank Frick [Member] | Forecast [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Remaining receivable amount           $ 3,900    
Cedar Cellular [Member] | 8.625% Notes [Member] | Cedar Cellular [Member]                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Carrying value of investment in a note   $ 0   $ 0     $ 0