Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets measured at fair value on a nonrecurring basis
Commercial	$ 47,111	$ 47,683
Commercial real estate	121,661	114,883
Residential real estate	48,816	48,314
Construction	37,221	35,026
Consumer	8,253	8,870
Total impaired loans	297,786	290,781
Real estate owned	1,169	1,222
Other assets (repossessed assets)	116,000	52,000
Fair Value, Nonrecurring [Member]
Assets measured at fair value on a nonrecurring basis
Commercial	967	1,202
Commercial real estate	1,165	995
Residential real estate	2,029	2,580
Construction	606	719
Consumer	81	323
Total impaired loans	4,848	5,819
Real estate owned	1,169	1,222
Other assets (repossessed assets)	116	52
Total Assets Measured at Fair Value on a Nonrecurring Basis	6,133	7,093
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair Value, Nonrecurring [Member]
Assets measured at fair value on a nonrecurring basis
Commercial	0	0
Commercial real estate	0	0
Residential real estate	0	0
Construction	0	0
Consumer	0	0
Total impaired loans	0	0
Real estate owned	0	0
Other assets (repossessed assets)	0	0
Total Assets Measured at Fair Value on a Nonrecurring Basis	0	0
Other Observable Inputs (Level 2) [Member] \| Fair Value, Nonrecurring [Member]
Assets measured at fair value on a nonrecurring basis
Commercial	967	1,202
Commercial real estate	1,165	995
Residential real estate	2,029	2,580
Construction	606	719
Consumer	81	323
Total impaired loans	4,848	5,819
Real estate owned	1,169	1,222
Other assets (repossessed assets)	116	52
Total Assets Measured at Fair Value on a Nonrecurring Basis	6,133	7,093
Significant Unobservable Inputs (Level 3) [Member] \| Fair Value, Nonrecurring [Member]
Assets measured at fair value on a nonrecurring basis
Commercial	0	0
Commercial real estate	0	0
Residential real estate	0	0
Construction	0	0
Consumer	0	0
Total impaired loans	0	0
Real estate owned	0	0
Other assets (repossessed assets)	0	0
Total Assets Measured at Fair Value on a Nonrecurring Basis	0	0
Total Changes in Fair Values Included in Period Earnings [Member] \| Fair Value, Nonrecurring [Member]
Assets measured at fair value on a nonrecurring basis
Commercial	0	0
Commercial real estate	0	0
Residential real estate	0	0
Construction	0	0
Consumer	0	0
Total impaired loans	0	0
Real estate owned	0	0
Other assets (repossessed assets)	0	0
Total Assets Measured at Fair Value on a Nonrecurring Basis	$ 0	$ 0

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Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

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