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Accounts Receivable, Net And Other Receivables And Finance Loans Receivable, Net (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended
Oct. 31, 2021
Jul. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Remaining receivable amount     $ 27,643 $ 26,583
Cedar Cellular [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Equity ownership percentage     7.625%  
Cedar Cellular [Member] | 8.625% Notes [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Interest rate     8.625%  
Bank Frick [Member] | Forecast [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Remaining receivable amount   $ 3,900    
Bank Frick [Member] | Subsequent Event [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Proceeds from sale of equity method investments $ 7,500      
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