Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amortizable intangible assets:
Amortization expense	$ 1,210	$ 1,012	$ 1,819
Estimated amortization expense
For the year ending December 31, 2014	814
For the year ending December 31, 2015	571
For the year ending December 31, 2016	415
For the year ending December 31, 2017	259
For the year ending December 31, 2018	173
Core Deposits
Amortizable intangible assets:
Intangible asset - gross	30,578	30,578
Less: accumulated amortization	(30,491)	(30,181)
Intangible asset - net	87	397
Customer and Contract
Amortizable intangible assets:
Intangible asset - gross	6,197	3,779
Acquisitions		2,418
Less: accumulated amortization	(3,965)	(3,065)
Intangible asset - net	$ 2,232	$ 3,132