Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net income (loss)	$ 71,746,000	$ (42,116,000)
Adjustments to reconcile net income (loss) to net cash used in operations
Depreciation and amortization	230,000	256,000
Net unrealized (gains) losses on marketable securities	(76,068,000)	57,680,000
Realized gains on sales of marketable securities	(18,478,000)	0
Deferred income taxes	23,227,000	(15,265,000)
(Increase) decrease in current assets
Accounts receivable, net	(2,702,000)	689,000
Inventories	6,000	0
Prepaid expenses and other assets	129,000	(85,000)
Income tax receivable	601,000	(317,000)
Increase (decrease) in liabilities
Accounts payable	(242,000)	(1,459,000)
Accrued liabilities	994,000	(226,000)
Income tax payable	1,548,000	0
Net cash used in operating activities	(3,178,000)	(4,578,000)
Cash flows from investing activities
Proceeds from sales of marketable securities	20,002,000	0
Purchases of marketable securities	(39,995,000)	0
Purchases of property, plant and equipment	(29,000)	(168,000)
Net cash used in investing activities	(20,022,000)	(168,000)
Cash flows from financing activities
Payment to margin loan principal	(14,493,000)	0
Borrowing from margin loan account	17,000,000	0
Payment of real estate loan principal	(59,000)	(62,000)
Net cash provided from (used in) financing activities	2,448,000	(62,000)
Decrease in cash and restricted cash and cash equivalents	(20,752,000)	(4,808,000)
Cash and restricted cash and cash equivalents
Beginning of period	28,963,000	10,630,000
End of period	8,211,000	5,822,000
Interest paid during period	163,000	390,000
Net income taxes (refunded) paid	(441,000)	1,000
Subscription and Circulation [Member]
Increase (decrease) in liabilities
Deferred revenue arrangements	(398,000)	(311,000)
Professional Fees [Member]
Increase (decrease) in liabilities
Deferred revenue arrangements	16,000	(849,000)
License and Maintenance [Member]
Increase (decrease) in liabilities
Deferred revenue arrangements	$ (3,787,000)	$ (2,575,000)