Allowance for Loan and Lease Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 27,970
Provision for loan and lease losses	743	1,038
Ending Balance	28,014
Orginated Loans and Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	26,700	24,643
Charge-offs	(746)	(1,192)
Recoveries	196	327
Provision for loan and lease losses	511	820
Ending Balance	26,661	24,598
Orginated Loans and Leases [Member] | Commercial and industrial, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,406	7,533
Charge-offs	(121)	(390)
Recoveries	65	160
Provision for loan and lease losses	419	(266)
Ending Balance	8,769	7,037
Orginated Loans and Leases [Member] | Commercial real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,459	10,184
Charge-offs	(180)	(346)
Recoveries	2	78
Provision for loan and lease losses	134	728
Ending Balance	10,415	10,644
Orginated Loans and Leases [Member] | Residential real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,771	4,981
Charge-offs	(193)	(192)
Recoveries	12	2
Provision for loan and lease losses	(222)	245
Ending Balance	5,368	5,036
Orginated Loans and Leases [Member] | Consumer and other, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,059	1,940
Charge-offs	(252)	(264)
Recoveries	117	87
Provision for loan and lease losses	185	116
Ending Balance	2,109	1,879
Orginated Loans and Leases [Member] | Finance Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5	5
Charge-offs	0	0
Recoveries	0	0
Provision for loan and lease losses	(5)	(3)
Ending Balance	0	2
Acquired Loans and Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,270	0
Charge-offs	(149)	(155)
Recoveries	0	218
Provision for loan and lease losses	232	63
Ending Balance	1,353	0
Acquired Loans and Leases [Member] | Commercial and industrial, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	168	0
Charge-offs	(19)	(23)
Recoveries	0	23
Provision for loan and lease losses	149	0
Ending Balance	298	0
Acquired Loans and Leases [Member] | Commercial real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	770	0
Charge-offs	(25)	0
Recoveries	0	63
Provision for loan and lease losses	74	63
Ending Balance	819	0
Acquired Loans and Leases [Member] | Residential real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	274	0
Charge-offs	(99)	(107)
Recoveries	0	107
Provision for loan and lease losses	(105)	0
Ending Balance	70	0
Acquired Loans and Leases [Member] | Consumer and other, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	58	0
Charge-offs	(6)	(25)
Recoveries	0	25
Provision for loan and lease losses	114	0
Ending Balance	166	0
Acquired Loans and Leases [Member] | Finance Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0
Charge-offs		0
Recoveries	0	0
Provision for loan and lease losses	0	0
Ending Balance	$ 0	$ 0