Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Current Assets
Cash and cash equivalents	$ 27,466	$ 25,401
Restricted cash	1,000	1,000
Investments in securities at fair value, current	10,092	11,642
Accounts and other receivables (net of allowance for credit losses of $0, and $0, respectively)	1,376	1,245
Tax receivable	232	576
Prepaid expenses	262	510
Total Current Assets	40,428	40,374
Net Property and Equipment	1,126	1,138
Other Assets
Deferred tax asset	2,130	1,920
Investments in trading securities at fair value, non-current	1,465	1,563
Investments in available-for-sale debt securities at fair value (amortized cost: $7,056 and $7,729, respectively) (net of allowance for credit losses of $0, and $0, respectively)	5,784	7,008
Investments in held-to-maturity debt securities at amortized cost	1,000	1,000
Less: Allowance for credit losses	(177)	0
Investments in held-to-maturity debt securities, net of allowance for credit losses	823	1,000
Other investments	1,613	2,388
Financing lease, right of use assets	53	65
Other assets, non-current	210	217
Total Other Assets	12,078	14,161
Total Assets	53,632	55,673
Current Liabilities
Accounts payable	93	143
Accrued compensation and related costs	473	1,165
Dividends payable	322	329
Financing lease liability, short-term	30	28
Other accrued expenses	1,235	1,274
Total Current Liabilities	2,153	2,939
Long-Term Liabilities
Deferred tax liability	19	4
Reserve for uncertain tax positions	546	496
Financing lease liability, long-term	24	38
Total Long-Term Liabilities	589	538
Total Liabilities	2,742	3,477
Commitments and Contingencies (Note 13)
Shareholders’ Equity
Additional paid-in-capital	16,444	16,442
Treasury stock, class A shares at cost; 1,753,239 and 1,370,325 shares at December 31, 2023, and June 30, 2023, respectively	(4,891)	(3,740)
Accumulated other comprehensive income, net of tax	963	1,348
Retained earnings	37,975	37,747
Total Shareholders’ Equity	50,890	52,196
Total Liabilities and Shareholders’ Equity	53,632	55,673
Common Class A [Member]
Shareholders’ Equity
Common Stock	347	347
Common Class B [Member]
Shareholders’ Equity
Common Stock	0	0
Common Class C [Member]
Shareholders’ Equity
Common Stock	$ 52	$ 52