Offsetting Assets and Liabilities - Offsetting of Assets (Details) (USD $)	Sep. 30, 2014
Offsetting Assets [Line Assets]
Gross Amount Of Recognized Assets	$ 3,906,000
Gross Amount Of Assets Offset In The Balance Sheet	0
Net Amount Of Assets Presented In The Balance Sheet	3,906,000
Gross Amounts Of Financial Instruments Received Not Offset In Balance Sheet	0
Gross Amounts Of Cash Collateral Received Not Offset In Balance Sheet	3,776,000
Net Amount Of Assets	130,000
Swaption [Member}
Offsetting Assets [Line Assets]
Gross Amount Of Recognized Assets	3,906,000
Gross Amount Of Assets Offset In The Balance Sheet	0
Net Amount Of Assets Presented In The Balance Sheet	3,906,000
Gross Amounts Of Financial Instruments Received Not Offset In Balance Sheet	0
Gross Amounts Of Cash Collateral Received Not Offset In Balance Sheet	3,776,000
Net Amount Of Assets	$ 130,000