Loans, Allowance for Loan Losses, and Credit Quality (Details Textuals) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loans Allowance For Loan Losses And Credit Quality Disclosure Textuals [Line Items]
Interest income recognized on accruing restructured loans			$ 4,000,000		$ 6,000,000
Restructured Loans Subsequently Accruing	10,000,000		10,000,000
YTD restructured loans still on nonaccrual	16,000,000		16,000,000
90 Days or More Past Due	62,373,000		62,373,000		86,863,000
Financing Receivable Modification Recorded Investment	18,504,000	12,898,000	26,373,000	38,791,000
Accruing Loans [Member]
Loans Allowance For Loan Losses And Credit Quality Disclosure Textuals [Line Items]
90 Days or More Past Due	$ 1,690,000		$ 1,690,000		$ 2,350,000