Components of Income Tax Provision (Benefit) (Detail) (USD $) In Thousands	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Current:
Federal	$ 16	$ (3,883)	$ 16
State	1,356	616	13
Foreign	858	521	614
Current Income Tax Expense (Benefit), Total	2,230	(2,746)	643
Deferred:
Federal
State
Foreign	(276)
Income tax provision (benefit)	$ 1,954	$ (2,746)	$ 643

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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