Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 7,840,000	$ 7,672,000
provided by operations
Depreciation and amortization	535,000	613,000
Deferred income taxes	189,000	(423,000)
Premium amortized (discount earned) on U.S. Treasury Bills and bonds	(13,000)	(11,000)
(Increase) decrease in current assets
Accounts receivable, net	2,614,000	1,012,000
Inventories	(15,000)	(10,000)
Prepaid expenses and other assets	(2,000)	8,000
Increase (decrease) in current liabilities
Accounts payable	(443,000)	(334,000)
Accrued liabilities	(693,000)	1,138,000
Income taxes	(96,000)	(5,000)
Deferred subscription and other revenues	401,000	(336,000)
Net cash provided by operating activities	10,317,000	9,324,000
Cash flows from investing activities
Maturities and sales of U.S. Treasury Notes and Bills	51,199,000	38,380,000
Purchases of U.S. Treasury Notes and Bills	(50,790,000)	(45,269,000)
Purchases of marketable securities	(11,154,000)
Purchases of property, plant and equipment	(129,000)	(245,000)
Net cash used for investing activities	(10,874,000)	(7,134,000)
(Decrease) increase in cash and cash equivalents	(557,000)	2,190,000
Cash and cash equivalents
Beginning of year	3,615,000	1,425,000
End of year	3,058,000	3,615,000
Income taxes paid during year	$ 4,042,000	$ 5,028,000