Stock Compensation Plans (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 1998
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(6,300)	(5,000)
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	2,151,500
Award vesting percentage	20.00%
Award vesting period	5 years
Stock options granted during period	128,000	135,000	29,000
Stock options, aggregate grant date fair value	$ 241	$ 349	$ 69
Stock options vested during period	42,900	43,800	17,300
Stock options vested during period, aggregate grant date fair value	$ 100	$ 80	$ 32
Number of unvested stock options	263,000	177,600
Unvested stock awards, aggregate grant date fair value	$ 574	$ 434
Unvested stock options, aggregate intrinsic value	$ 390
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		0	0
Stock options, outstanding, aggregate intrinsic value	$ 738	$ 675	$ 443
Stock Grants \| MRDP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized				529,000
Award vesting percentage	20.00%
Award vesting period	5 years
Number of shares available for grant (shares)	0
Stock awards, granted during period	0	0	0
Number of unvested stock awards (shares)	0	0

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Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Net number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Number of share options (or share units) exercised during the current period.

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