Consolidated Balance Sheets (Unaudited) - USD ($)	Dec. 31, 2020	Sep. 30, 2020
Current assets
Cash and cash equivalents	$ 9,622,000	$ 26,922,000
Restricted cash	2,042,000	2,041,000
Marketable securities at fair value -- common stocks	260,580,000	179,368,000
Accounts receivable, less allowance for doubtful accounts of $250,000 at December 31, 2020 and September 30, 2020	6,855,000	6,727,000
Inventories	27,000	36,000
Prepaid expenses and other current assets	552,000	613,000
Income tax receivable	597,000	601,000
Total current assets	280,275,000	216,308,000
Property, plant and equipment, at cost
Land, buildings and improvements	16,572,000	16,572,000
Furniture, office equipment and computer software	1,782,000	1,782,000
Machinery and equipment	1,524,000	1,524,000
Property, Plant and Equipment, Gross, Ending Balance	19,878,000	19,878,000
Less accumulated depreciation	(9,537,000)	(9,422,000)
Property, Plant and Equipment, Net, Ending Balance	10,341,000	10,456,000
Operating lease right-of-use assets	210,000	140,000
Deferred income taxes - Federal	12,517,000	11,137,000
Deferred income taxes - State	0	534,000
Assets, Total	303,343,000	238,575,000
Current liabilities
Accounts payable	3,683,000	3,926,000
Accrued liabilities	3,995,000	5,005,000
Note payable collateralized by real estate	144,000	133,000
Total current liabilities	25,283,000	27,990,000
Long term liabilities
Investment margin account borrowings	15,000,000	29,493,000
Note payable collateralized by real estate	1,542,000	1,576,000
Deferred maintenance agreements	338,000	450,000
Accrued liabilities	1,281,000	1,455,000
Deferred income taxes - State	658,000	0
Deferred income taxes	58,230,000	35,870,000
Total long term liabilities	77,049,000	68,844,000
Debts and commitments and contingencies (Notes 9 and 10)
Shareholders' equity
Preferred stock, $.01 par value, 5,000,000 shares authorized and no shares issued	0	0
Common stock, $.01 par value, 5,000,000 shares authorized; 1,805,053 shares issued, including 424,307 treasury shares, at December 31, 2020 and September 30, 2020	14,000	14,000
Additional paid-in capital	1,755,000	1,755,000
Retained earnings	199,242,000	139,972,000
Total shareholders' equity	201,011,000	141,741,000
Liabilities and Equity, Total	303,343,000	238,575,000
Subscription and Circulation [Member]
Current liabilities
Deferred revenue	2,584,000	2,899,000
Installation Contracts [Member]
Current liabilities
Deferred revenue	140,000	140,000
Professional Fees [Member]
Current liabilities
Deferred revenue	4,783,000	4,728,000
License and Maintenance [Member]
Current liabilities
Deferred revenue	$ 9,954,000	$ 11,159,000