Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Sep. 30, 2013
Current assets
Cash and cash equivalents	$ 11,274,000	$ 11,338,000
Marketable securities, including common stocks of $160,128,000 and bonds of $7,900,000 at March 31, 2014 and common stocks of $129,699,000 and bonds of $7,295,000 at September 30, 2013	168,028,000	136,994,000
Accounts receivable, less allowance for doubtful accounts of $250,000 at March 31, 2014 and September 30, 2013, respectively	6,339,000	6,314,000
Inventories	38,000	56,000
Prepaid expenses and other assets	1,531,000	1,958,000
Income tax receivable	16,000	305,000
Total current assets	187,226,000	156,965,000
Property, plant and equipment, at cost
Land, buildings and improvements	12,847,000	12,847,000
Furniture, office equipment and computer software	2,781,000	2,712,000
Machinery and equipment	2,039,000	2,014,000
	17,667,000	17,573,000
Less accumulated depreciation	(8,558,000)	(8,343,000)
	9,109,000	9,230,000
Intangibles, net	20,191,000	22,637,000
Goodwill	13,400,000	13,400,000
Deferred income taxes	1,248,000	858,000
	231,174,000	203,090,000
Current liabilities
Accounts payable	4,193,000	4,259,000
Accrued liabilities	3,042,000	4,443,000
Income tax payable	79,000
Deferred income taxes	44,313,000	32,132,000
Total current liabilities	68,447,000	58,111,000
Long term liabilities
Investment margin account borrowings	29,493,000	29,493,000
Deferred maintenance agreements	238,000	269,000
Accrued liabilities	1,370,000	1,870,000
Total long term liabilities	31,101,000	31,632,000
Commitments and contingencies (Note 11)
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; 1,380,746 shares at March 31, 2014 and September 30, 2013, outstanding	14,000	14,000
Additional paid-in capital	1,755,000	1,755,000
Retained earnings	57,083,000	57,670,000
Accumulated other comprehensive income	72,774,000	53,908,000
Total shareholders' equity	131,626,000	113,347,000
	231,174,000	203,090,000
Subscription Arrangement [Member]
Current liabilities
Deferred	3,551,000	3,534,000
Deferred Installation Contracts [Member]
Current liabilities
Deferred	7,764,000	6,879,000
Deferred Maintenance Agreement [Member]
Current liabilities
Deferred	$ 5,505,000	$ 6,864,000