Loans and Leases (Loans and leases not covered by share agreements (in text)) (Details)	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans delinquent 30 to 89 days, percentage	0.31%	0.21%
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Percent of loans	66.00%	66.00%
Substandard
Financing Receivable, Recorded Investment [Line Items]
Percent of loans	34.00%	34.00%
Nonpass
Financing Receivable, Recorded Investment [Line Items]
Percent of nonaccrual loans	8.00%	9.00%