Equity (Stock Repurchase Program) (Details) (USD $)	Jun. 30, 2014	Sep. 30, 2013	May 31, 2012
Stock Repurchase Program
Repurchase of common stock, authorized amount		$ 50,000,000	$ 20,000,000
Available repurchase of common stock, authorized amount	$ 29,000,000	$ 16,000,000

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant