Securities Sold Under Agreements to Repurchase ("Repurchase Agreements") (Schedule of Repurchase Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Disclosure of Repurchase Agreements [Abstract]
Gross Amounts of Recognized Liabilities	$ 34,746	[1]	$ 45,699	[1]
Net Amounts of Liabilities Presented in the Statements of Condition	34,746	[1]	45,699	[1]
Gross Amounts Not offset in the Statements of Condition - Financial Instruments	(34,746)	[1]	(45,699)	[1]
Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value	$ 38,331		$ 47,576

[1] As of March 31, 2015, and December 31, 2014, the fair value of securities pledged in connection with repurchase agreements was $38,331,000 and $47,576,000, respectively.