Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of difference between amounts of income tax provision
Amount at statutory federal income tax rate	$ 5,707	$ 5,785	$ 1,884
Change because of the following items:
State taxes	236	412	121
Stock-based compensation	36	(7)	255
Valuation allowance	303	21	2,780
Other	(105)	(607)	(61)
Total provision	$ 6,177	$ 5,604	$ 4,979

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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