Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2012
Income Tax [Line Items]
Valuation Allowance, Amount	$ 4.4		$ 4.4		$ 1.7
Additional Valuation Allowance Amount					$ 2.7
Effective Income Tax Rate, Continuing Operations	8.07%		2.61%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			34.00%
Effective Income Tax Rate Reconciliation, Tax Credits, Research		70.69%		72.04%