Loans and Leases (Carrying amount loans covered by loss share agreements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	$ 1,139	$ 1,087
Non impaired purchased loans	4,327	4,662
Total covered loans	5,466	5,749
Commercial and Commercial Real Estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	565	549
Non impaired purchased loans	1,727	1,765
Total covered loans	2,292	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	502	543
Total covered loans	502	543
Residential Real Estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	0	0
Non impaired purchased loans	2,062	2,280
Total covered loans	2,062	2,280
Consumer
Loans covered by loss share agreement (carrying amount) [Line Items]
Impaired purchased loans	574	538
Non impaired purchased loans	36	74
Total covered loans	$ 610	$ 612