Loans (Narrative) (Details) (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
Financing Receivable, Recorded Investment [Line Items]
Troubled Debt Restructuring, Classification removed	$ 900,000	$ 728,000	$ 2,500,000	$ 3,600,000
Partial Charge-Offs On Impaired Loans			44,574,000		63,272,000
Impaired Financing Receivable, Related Allowance	4,120,000		4,120,000		10,451,000
Recorded investment, related to loans	10,500,000		10,500,000		21,400,000
Troubled Debt Restructuring Included In Nonaccrual Loans	46,800,000		46,800,000		76,300,000
TDRs included in accruing loan totals	17,200,000		17,200,000		18,800,000
Nonaccrual Trouble Debt Restructuring Current	14,500,000		14,500,000		50,600,000
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR	2,700,000		2,700,000		4,000,000
Specific reserves related to troubled debt restructuring	2,500,000		2,500,000		7,500,000
Additional specific reserves related to troubled debt restructurings	258,000	474,000	537,000	745,000
Modified substandard commercial loans, total recorded investment	443,000	541,000	443,000	541,000
Modified substandard consumer loans, total recorded investment	17,600,000	19,600,000	17,600,000	19,600,000
Loan Modifications on Nonacrrual status	205,000	800,000	1,000,000	3,200,000
Loan past due period before entering default status			30 days
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	2,228,000	5,603,000	2,507,000	7,162,000
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans			40,400,000		58,100,000
Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans			4,200,000		5,200,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period		634,000		670,000
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	0		0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	252,000		252,000		5,496,000
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period	160,000	376,000	261,000	496,000
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period	$ 2,100,000	$ 5,200,000	$ 2,200,000	$ 6,700,000