Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Sep. 30, 2010	Sep. 30, 2011 Scenario, Forecast [Member]	Jun. 30, 2011 Discrete Items [Member]	Jun. 30, 2010 Discrete Items [Member]
Income tax expense	$ 1,800,000	$ (6,610,000)	$ 5,100,000	$ (22,580,000)			$ 3,200,000	$ 1,900,000
Changes in the valuation allowance and uncertain tax positions			1,000,000
Effective income tax rate			51.00%			(1.00%)
Tax credit carryforwards	21,000,000		21,000,000
Operating loss carryforwards expiration date			from 2012 to 2031
Net operating loss carryforwards	76,000,000		76,000,000
Estimated income tax rate excluding effects of Section 45 tax credits					34.00%
Pre-tax loss	(4,548,000)	(5,102,000)	(178,089,000)	(48,000,000)
Deferred tax position		$ 0		$ 0
Tax credit carryforwards, expiration date			from 2014 to 2031
Tax audit by IRS years already examined			years 2005 through 2008
Tax audit by IRS year under examination			2009
Tax audit by IRS years subject to examination			years 2005 through 2010