The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of unrealized gain (loss) on investment.

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Marketable Securities (Narratives) (Details) - USD ($)	3 Months Ended		12 Months Ended
Marketable Securities (Narratives) (Details) - USD ($)	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 21, 2017
Gain (Loss) on Securities [Line Items]
Marketable Securities, Realized Gain (Loss)	$ 0	$ 0
Unrealized Gain (Loss) on Investments	548,000	148,000
Proceeds from Equity Method Investment, Distribution, Return of Capital	313,000	0
Equity Method Investments [Member]
Gain (Loss) on Securities [Line Items]
Proceeds from Dividends Received	313,000
EMC [Member]
Gain (Loss) on Securities [Line Items]
Equity Method Investment, Ownership Percentage				49.00%
Increase (Decrease) in Accounts Receivable, Related Parties	4,611,000		$ 2,589,000
Equity Method Investments	2,373,000		$ 2,765,000
Investment Income, Net	$ 65,000	$ 241,000