Stock Repurchase Program (Narrative) (Details)	12 Months Ended
Sep. 30, 2012
Equity [Abstract]
Stock Repurchase Program, Authorized Amount	12,000,000
Stock Repurchase Program Expiration Date	January 2015
Stock Repurchase Program, Remaining Number of Shares Authorized	7,100,000

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant