Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2012
Valuation Allowance, Amount	$ 4.2		$ 4.2		$ 1.7
Additional Valuation Allowance Amount					$ 2.5
Effective Income Tax Rate, Continuing Operations	(2.48%)		(2.34%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			34.00%
Effective Income Tax Rate Reconciliation, Tax Credits, Research		(27.31%)		(72.64%)

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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- Definition

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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