Consolidated Statements of Cash Flows	12 Months Ended
	Jun. 30, 2025 USD ($)		Jun. 30, 2024 USD ($)
Cash Flows from Operating Activities:
Net income (loss)	$ (334,000)		$ 1,333,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	(118,000)		(139,000)
Net realized (gains) losses on securities	(418,000)		5,705,000
Unrealized (gains) losses on securities	247,000		(5,560,000)
Provision for deferred taxes	709,000		335,000
Reserve for uncertain tax positions	106,000		114,000
Share-based compensation expense	124,000		0
Allowance for credit losses	(80,000)	[1]	(100,000)	[1]
Changes in operating assets and liabilities:
Accounts and other receivables	(800,000)		45,000
Prepaid expenses and other assets	(17,000)		53,000
Accounts payable and accrued expenses	(241,000)		(796,000)
Total adjustments	(488,000)		(343,000)
Net cash provided by (used in) operating activities	(822,000)		990,000
Cash Flows from Investing Activities:
Purchase of property and equipment	(7,000)		(213,000)
Purchase of trading securities at fair value, non-current	(1,246,000)		(234,000)
Purchase of other investments	0		(573,000)
Proceeds from principal paydowns of available-for-sale debt securities at fair value	2,250,000		3,000,000
Return of capital on non-current investments	24,000		0
Return of capital on other investments	(24,000)		259,000
Net cash provided by (used in) investing activities	1,057,000		4,419,000
Cash Flows from Financing Activities:
Principal payments on financing lease	(33,000)		(30,000)
Proceeds from notes payable	75,000		0
Issuance of common stock	73,000		69,000
Repurchases of common stock	(1,969,000)		(2,172,000)
Excise tax paid on repurchases of common stock	(20,000)		0
Dividends paid	(1,208,000)		(1,278,000)
Net cash provided by (used in) financing activities	(3,082,000)		(3,411,000)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(2,847,000)		1,998,000
Beginning cash, cash equivalents, and restricted cash	28,399,000		26,401,000
Ending cash, cash equivalents, and restricted cash	25,552,000		28,399,000
Supplemental Disclosures of Non-Cash Investing and Financing Activities
Dividends declared but not paid	296,000		313,000
Excise tax liability accrued on stock repurchases	19,000		22,000
Unsettled class A common stock repurchases	10,000		14,000
Supplemental Disclosures of Cash Flow Information
Cash paid for income taxes	134,000		252,000
Cash paid for interest	1,000		3,000
Trading Securities, Current [Member]
Cash Flows from Investing Activities:
Proceeds on sale of trading securities at fair value, current	0		2,000,000
Trading Securities, Non-current [Member]
Cash Flows from Investing Activities:
Proceeds on sale of trading securities at fair value, current	$ 60,000		$ 180,000

[1] Represents the change in present value attributable to the passage of time included in interest income.