Consolidated Statements of Cash Flows (Unaudited) - USD ($)	1 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Cash flows from operating activities
Net income		$ 15,415,000	$ 12,615,000	$ 9,433,000	$ 17,827,000	$ 28,030,000	$ 27,260,000
Adjustments to reconcile net income to net cash (used in) provided from operations
Depreciation and amortization						133,000	145,000
Net unrealized gains on marketable securities		(5,503,000)		(8,644,000)		(20,193,000)	(32,669,000)	$ (32,669,000)
Realized gains on sales of marketable securities		(14,261,000)		0		(14,261,000)	(422,000)
Stock dividends						0	(2,978,000)
Deferred income taxes						5,047,000	9,614,000
Accounts receivable, net						3,063,000	3,416,000
Inventories						8,000	(42,000)
Prepaid expenses and other assets						(108,000)	25,000
Income tax receivable						0	269,000
Accounts payable						(573,000)	(643,000)
Accrued liabilities, including non-qualified deferred compensation						(3,279,000)	(2,998,000)
Income tax payable						1,481,000	0
Net cash (used in) provided from operating activities						(4,813,000)	1,730,000
Cash flows from investing activities
Proceeds from sales of marketable securities	$ 40,579,000					40,579,000	2,826,000
Purchases of marketable securities							(10,001,000)
Purchases of property, plant and equipment		(18,000)		(38,000)		(23,000)	(74,000)
Net cash used in investing activities						40,556,000	(7,249,000)
Cash flows from financing activities
Proceeds from margin loan borrowing							6,011,000
Payment to margin loan borrowing				(11,000)		(45,579,000)	(11,000)
Payment of real estate loan principal						(79,000)	(77,000)
Net cash (used in) provided from financing activities						(45,658,000)	5,923,000
(Decrease) increase in cash and restricted cash and cash equivalents						(9,915,000)	404,000
Cash and restricted cash and cash equivalents
Beginning of period			$ 23,138,000		$ 15,468,000	23,138,000	15,468,000	15,468,000
End of period	$ 13,223,000	$ 13,223,000		$ 15,872,000		13,223,000	15,872,000	$ 23,138,000
Interest paid during period						2,198,000	1,869,000
Net income taxes paid						1,802,000	52,000
Subscription and Circulation [Member]
Adjustments to reconcile net income to net cash (used in) provided from operations
Deferred subscriptions						(116,000)	(127,000)
Professional Fees [Member]
Adjustments to reconcile net income to net cash (used in) provided from operations
Deferred consulting fees						(1,600,000)	1,627,000
License and Maintenance [Member]
Adjustments to reconcile net income to net cash (used in) provided from operations
Deferred consulting fees						$ (2,445,000)	$ (747,000)