Loans and Leases (Carrying amount loans covered by loss share agreements) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	$ 266	$ 1,087
Non impaired purchased loans	3,584	4,662
Total covered loans	3,850	5,749
Commercial and commercial real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	0	549
Non impaired purchased loans	1,188	1,765
Total covered loans	1,188	2,314
Agricultural and agricultural real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	0	0
Non impaired purchased loans	573	543
Total covered loans	573	543
Residential real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	0	0
Non impaired purchased loans	1,762	2,280
Total covered loans	1,762	2,280
Consumer
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	266	538
Non impaired purchased loans	61	74
Total covered loans	$ 327	$ 612