Loans (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Deferred Income	$ 10,500,000		$ 10,500,000		$ 10,400,000
Troubled Debt Restructuring, Classification removed	917,000		1,700,000
Partial Charge-Offs On Impaired Loans			24,358,000		28,705,000
Impaired Financing Receivable, Related Allowance	6,287,000		6,287,000		4,191,000
Recorded investment, related to loans	18,500,000		18,500,000		19,900,000
Troubled Debt Restructuring Included In Nonaccrual Loans	49,600,000		49,600,000		41,100,000
TDRs included in accruing loan totals	17,800,000		17,800,000		25,100,000
Nonaccrual Trouble Debt Restructuring Current	42,000,000		42,000,000		19,100,000
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR	2,500,000		2,500,000		2,300,000
Specific reserves related to troubled debt restructuring	4,000,000		4,000,000		2,300,000
Additional Specific Reserves Related To Troubled Debt Restructuring	950,000	$ 104,000	975,000	$ 961,000
Modified substandard commercial loans, total recorded investment	33,000	112,000	33,000	112,000
Modified substandard consumer loans, total recorded investment	4,400,000	10,400,000	4,400,000	10,400,000
Loan Modifications on Nonacrrual status	1,900,000	301,000	$ 2,800,000	1,300,000
Loan past due period before entering default status			30 days
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	1,747,000	1,727,000	$ 1,775,000	1,753,000
Deposit Liabilities Reclassified as Loans Receivable	1,800,000		1,800,000		1,700,000
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans			20,200,000		24,200,000
Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans			4,200,000		4,500,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	582,000	250,000	582,000	250,000
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	275,000		275,000		$ 381,000
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period	58,000	118,000	58,000	118,000
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period	$ 1,700,000	$ 1,600,000	$ 1,700,000	$ 1,600,000