Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net (loss) income	$ (75,624,000)	$ 112,900,000
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities
Depreciation and amortization	379,000	480,000
Gains on land sale	(272,000)
Gains on sales of marketable securities, net	(14,249,000)	(41,749,000)
Deferred income taxes	(30,821,000)	31,895,000
Unrealized losses (gains) on marketable securities	123,401,000	(106,499,000)
(Increase) decrease in current assets
Accounts receivable, net	(7,407,000)	(2,797,000)
Inventories	(13,000)	(7,000)
Prepaid expenses and other current assets	217,000	56,000
Income tax receivable	(1,019,000)	601,000
Increase (decrease) in liabilities
Accounts payable	823,000	313,000
Accrued liabilities	2,178,000	2,900,000
Income tax payable	(6,244,000)	6,244,000
Net cash (used in) provided by operating activities	(5,261,000)	3,286,000
Cash flows from investing activities
Sales of marketable securities	80,570,000	45,033,000
Purchases of marketable securities	(117,678,000)	(64,990,000)
Sale of land	381,000
Purchases of property, plant and equipment, net	(36,000)	(29,000)
Net cash used in investing activities	(36,763,000)	(19,986,000)
Cash flows from financing activities
Proceeds from margin loan borrowing	43,014,000	17,000,000
Payment to margin loan borrowing	(14,000)	(14,493,000)
Payment of real estate loan principal	(147,000)	(131,000)
Net cash provided by financing activities	42,853,000	2,376,000
Increase (decrease) in cash and cash equivalents and restricted cash	829,000	(14,324,000)
Cash and cash equivalents and restricted cash
Beginning of year	14,639,000	28,963,000
End of year	15,468,000	14,639,000
Interest paid during year	1,053,000	329,000
Income taxes paid during year	11,140,000	1,946,000
Subscription and Circulation [Member]
Increase (decrease) in liabilities
Deferred subscriptions	(15,000)	(205,000)
Professional Fees [Member]
Increase (decrease) in liabilities
Deferred subscriptions	896,000	630,000
License and Maintenance [Member]
Increase (decrease) in liabilities
Deferred subscriptions	$ 2,509,000	$ (1,476,000)