Long-Term Debt (Leverage Ratio And Capitalization Ratio Under The Terms Of The Amended Credit Agreement) (Details)	Sep. 30, 2011
Amended Credit Agreement Maximum Ratio Requirement [Member]
Leverage ratio	3.25
Capitalization ratio	60.00%
Amended Credit Agreement Actual Ratio [Member]
Leverage ratio	2.38
Capitalization ratio	45.90%