Derivative Assets And Collateral Received (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013	Jun. 30, 2013
Derivative [Line Items]
Gross amounts of recognized assets	$ 162,067,000		$ 181,866,000	$ 235,759,000
Derivative Assets not subject to master netting agreements	5,100,000			26,400,000
Subject to Master Netting Agreements
Derivative [Line Items]
Gross amounts of recognized assets	156,919,000	[1]		209,411,000	[1]
Gross amounts offset in the Statement of Condition	0			0
Net amounts of assets presented in the Statement of Condition	156,919,000	[1],[2]		209,411,000	[1],[2]
Derivative liabilities available for offset	(26,475,000)			(37,505,000)
Collateral Received	(129,064,000)			(170,712,000)
Net amount	1,380,000			1,194,000
Interest Rate Contract [Member] | Subject to Master Netting Agreements
Derivative [Line Items]
Gross amounts of recognized assets	156,919,000			209,300,000
Net amounts of assets presented in the Statement of Condition	156,919,000			209,300,000
Forwards And Futures [Member] | Subject to Master Netting Agreements
Derivative [Line Items]
Gross amounts of recognized assets				100,000
Net amounts of assets presented in the Statement of Condition				$ 100,000

[1] 2014 is comprised entirely of interest rate derivative contracts. 2013 includes $209.3 million of interest rate derivative contracts and $.1 million of forwards and futures contracts.

[2] Included in Derivative Assets on the Consolidated Condensed Statements of Condition. As of June 30, 2014 and 2013, $5.1 million and $26.4 million, respectively, of derivative assets (primarily capital markets forward contracts) have been excluded from these tables because they are generally not subject to master netting or similar agreements.