Consolidated Statements Of Shareholders' Equity And Comprehensive Income (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Comprehensive Income [Member]	Total
Balance at Sep. 30, 2009	$ 14,000	$ 1,839,000	$ 34,507,000	$ 20,712,000	$ (1,753,000)		$ 55,319,000
Balance (in Shares) at Sep. 30, 2009	1,447,028
Receipt of treasury stock upon partnership’s liquidation		(84,000)	(1,669,000)		1,753,000
Receipt of treasury stock upon partnership’s liquidation (in Shares)	(66,282)
Net income			7,672,000			7,672,000	7,672,000
Unrealized loss on investments				(2,325,000)		(2,325,000)	(2,325,000)
Total comprehensive income						5,347,000
Balance at Sep. 30, 2010	14,000	1,755,000	40,510,000	18,387,000			60,666,000
Balance (in Shares) at Sep. 30, 2010	1,380,746
Net income			7,840,000			7,840,000	7,840,000
Unrealized loss on investments				(3,627,000)		(3,627,000)	(3,627,000)
Total comprehensive income						4,213,000
Balance at Sep. 30, 2011	$ 14,000	$ 1,755,000	$ 48,350,000	$ 14,760,000			$ 64,879,000
Balance (in Shares) at Sep. 30, 2011	1,380,746