Securities and Equity Investments (Details) (Enertech [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2013
Enertech [Member]
Schedule of Equity Cost Investments [Line Items]
Cost Method Investments Original Cost	$ 5,000
Ownership Percentage In Enertech	2.21%

Original amount of cost-method investments at the acquisition date.

No definition available.

Name:	us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant