Accounts Receivable, Net And Other Receivables And Finance Loans Receivable, Net (Schedule Of Accounts Receivable, Net And Other Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2024	Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, trade, net	$ 21,407	$ 13,262
Accounts receivable, trade, gross	23,258	14,503
Allowance for doubtful accounts receivable, end of period	1,851	1,241
Beginning of period	1,241	509
Other receivables	24,796	23,405
Total accounts receivable, net and other receivables	$ 46,203	$ 36,667
Notes 8.625 Percent [Member] | Investment In Cedar Cellular Investment One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate	8.625%	8.625%
Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reversed to statement of operations	$ (200)	$ (511)
Charged to statement of operations	1,385	1,305
Utilized	(493)	(67)
Foreign currency adjustment	(82)	5
Other receivables	24,796	23,405
Total accounts receivable, net and other receivables	46,203	36,667
Accounts Receivable [Member] | Held To Maturity Investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net and other receivables	0	0
Accounts Receivable [Member] | Investment In Cedar Cellular Investment One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, trade, gross	0	0
Carbon [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful loans receivable	750	750
Carbon [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net and other receivables	$ 0	$ 0
Cedar Cellular Investment1 Ltd [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Equity ownership percentage	7.625%	7.625%