Investment Securities (Other Disclosures) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
FHLB stock	$ 5,900,000	$ 6,300,000
FRBR stock	4,300,000	3,100,000
Investment securities portfolio available as lendable collateral	376,300,000	447,300,000
Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities portfolio pledged as collateral	91,200,000	111,400,000
Retail repurchase agreements [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities portfolio pledged as collateral	18,800,000
Others [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities portfolio pledged as collateral	$ 77,400,000	$ 6,100,000