Assets And Liabilities Subject To Offsetting (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Repurchase Agreements, Gross Amounts of Recognized Liabilities	$ 19,922,000	$ 74,510,000
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	19,922,000	74,510,000
Repurchase Agreements, Gross amounts Not Offset in the Statements of Condition, Cash Collateral Pledged	0	0
Repurchase Agreements, Net Amount	0	0
Fair value of securities pledged	37,489,000	75,094,000
U.S. Agency Mortgage-Backed, Residential [Member]
Offsetting Liabilities [Line Items]
Repurchase Agreements, Gross amounts Not Offset in the Statements of Condition, Financial Instruments	(19,922,000)	(63,162,000)
U.S. Agency [Member]
Offsetting Liabilities [Line Items]
Repurchase Agreements, Gross amounts Not Offset in the Statements of Condition, Financial Instruments	$ 0	$ (11,348,000)