Offsetting Assets and Liabilities - Offsetting of Assets (Details) (Swaption [Member}, USD $)	Mar. 31, 2015	Dec. 31, 2014
Swaption [Member}
Offsetting Assets [Line Assets]
Gross Amount Of Recognized Assets	$ 126,000	$ 1,217,000
Gross Amount Of Assets Offset In The Balance Sheet	0	0
Net Amount Of Assets Presented In The Balance Sheet	126,000	1,217,000
Gross Amounts Of Financial Instruments Received Not Offset In Balance Sheet	0	0
Gross Amounts Of Cash Collateral Received Not Offset In Balance Sheet	(126,000)	(1,217,000)
Net Amount Of Assets	$ 0	$ 0