Securities Sold Under Agreements To Repurchase And Collateral Pledged By Counterparties (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Securities Sold Under Agreements To Repurchase [Abstract]
Gross amounts of recognized liabilities	$ 311,760,000		$ 475,530,000
Gross amounts offset in the statement of Condition	0		0
Net amounts of liabilities presented in the Statement of Condition	311,760,000	$ 562,214,000	475,530,000
Offsetting securities purchased under agreements to resell	(3,605,000)		(61,094,000)
Securities Collateral	(308,088,000)		(414,373,000)
Net amount	$ 67,000		$ 63,000