Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Gains included in net income, tax provision	$ 144	$ 118	$ 299
Accumulated Other Comprehensive Income (Loss)
Gains included in net income, tax provision	$ 144	$ 118	$ 299