Investments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	$ 42,064	$ 41,675
Unrealized Gains	343	393
Unrealized Losses	(87)	(118)
Fair Value	42,320	41,950
U.S. government and government agency obligations [Member]
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	32,614	30,433
Unrealized Gains	161	176
Unrealized Losses	(1)	(6)
Fair Value	32,774	30,603
Mortgage-backed securities [Member]
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	3,212	3,871
Unrealized Gains	129	131
Unrealized Losses	(36)	(54)
Fair Value	3,305	3,948
Municipal Bonds [Member]
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	3,183	3,561
Unrealized Gains	30	53
Unrealized Losses	(1)
Fair Value	3,212	3,614
Asset-backed securities [Member]
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	955	1,336
Unrealized Gains	1	1
Unrealized Losses	(46)	(49)
Fair Value	910	1,288
Corporate Bonds [Member]
Schedule Of Sales Available For Sale Securities Abstract
Original Cost	2,100	2,474
Unrealized Gains	22	32
Unrealized Losses	(3)	(9)
Fair Value	$ 2,119	$ 2,497

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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