Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Assets [Abstract]
Available-for-sale Securities, Fair Value	$ 314,530		$ 308,242
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Impaired loans	26,069		29,199
Assets [Abstract]
Percentage at which new appraisals discounted (in hundredths)	10.00%
Number of consecutive monthly payments for come out from non accrual status	6
Roll-forward of the transfers in and out of the Level III valuation method [Roll Forward]
Beginning balance	3,881
Transfers in	1,381
Transfers out	(1,988)	[1]
Other	(235)	[2]
Ending balance	3,039
Carrying Amount [Member]
Assets [Abstract]
Derivative financial instruments	41
Liabilities [Abstract]
Derivative Financial Instruments	496		314
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	67,965		749,284
Financial assets [Abstract]
Cash and Cash Equivalents	78,811		51,270
Securities	314,350		308,242
Loans Held-for-sale	67,965		749,284
Net portfolio loans	670,941
Accrued interest receivable	4,247		4,221
Derivative financial instruments	41
Financial liabilities [Abstract]
Deposits	975,285		929,869
Securities sold under agreements to repurchase	33,034		31,686
Short-term debt	8,393		28,331
FHLB borrowings	77,912		82,912
Trust preferred capital notes	5,155		5,155
Accrued interest payable	678		844
Interest rate swap	496		314
Fair Value [Member]
Assets [Abstract]
Derivative financial instruments	41
Liabilities [Abstract]
Derivative Financial Instruments	496		314
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	67,965		770,759
Financial assets [Abstract]
Cash and Cash Equivalents	78,811		51,270
Securities	314,350		308,242
Loans Held-for-sale	67,965		770,759
Net portfolio loans	696,309
Accrued interest receivable	4,247		4,221
Derivative financial instruments	41
Financial liabilities [Abstract]
Deposits	979,396		934,322
Securities sold under agreements to repurchase	33,034		31,686
Short-term debt	8,393		28,331
FHLB borrowings	78,898		83,899
Trust preferred capital notes	5,220		5,216
Accrued interest payable	678		844
Interest rate swap	496		314
Recurring [Member]
Assets [Abstract]
Derivative financial instruments	41
Liabilities [Abstract]
Derivative Financial Instruments	496		314
Financial assets [Abstract]
Derivative financial instruments	41
Financial liabilities [Abstract]
Interest rate swap	496		314
Nonrecurring [Member]
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	67,965		92,514
Impaired loans	10,313		10,648
Assets [Abstract]
Other Real Estate Owned at Fair Value	13,335		8,535
Financial assets [Abstract]
Loans Held-for-sale	67,965		92,514
Level 1 [Member]
Assets [Abstract]
Derivative financial instruments	0
Liabilities [Abstract]
Derivative Financial Instruments	0
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	0
Financial assets [Abstract]
Cash and Cash Equivalents	78,811
Securities	0
Loans Held-for-sale	0
Net portfolio loans	0
Accrued interest receivable	0
Derivative financial instruments	0
Financial liabilities [Abstract]
Deposits	0
Securities sold under agreements to repurchase	0
Short-term debt	0
FHLB borrowings	0
Trust preferred capital notes	0
Accrued interest payable	0
Interest rate swap	0
Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Derivative financial instruments	0
Liabilities [Abstract]
Derivative Financial Instruments	0		0
Financial assets [Abstract]
Derivative financial instruments	0
Financial liabilities [Abstract]
Interest rate swap	0		0
Level 1 [Member] | Nonrecurring [Member]
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	0		0
Impaired loans	0		0
Assets [Abstract]
Other Real Estate Owned at Fair Value	0		0
Financial assets [Abstract]
Loans Held-for-sale	0		0
Level 2 [Member]
Assets [Abstract]
Derivative financial instruments	41
Liabilities [Abstract]
Derivative Financial Instruments	496
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	67,965
Financial assets [Abstract]
Cash and Cash Equivalents	0
Securities	314,350
Loans Held-for-sale	67,965
Net portfolio loans	693,270
Accrued interest receivable	4,247
Derivative financial instruments	41
Financial liabilities [Abstract]
Deposits	979,396
Securities sold under agreements to repurchase	33,034
Short-term debt	8,393
FHLB borrowings	78,898
Trust preferred capital notes	5,220
Accrued interest payable	678
Interest rate swap	496
Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Derivative financial instruments	41
Liabilities [Abstract]
Derivative Financial Instruments	496		314
Financial assets [Abstract]
Derivative financial instruments	41
Financial liabilities [Abstract]
Interest rate swap	496		314
Level 2 [Member] | Nonrecurring [Member]
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	67,965		92,514
Impaired loans	7,274		6,767
Assets [Abstract]
Other Real Estate Owned at Fair Value	13,335		8,535
Financial assets [Abstract]
Loans Held-for-sale	67,965		92,514
Level 3 [Member]
Assets [Abstract]
Derivative financial instruments	0
Liabilities [Abstract]
Derivative Financial Instruments	0
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	0
Financial assets [Abstract]
Cash and Cash Equivalents	0
Securities	0
Loans Held-for-sale	0
Net portfolio loans	3,039
Accrued interest receivable	0
Derivative financial instruments	0
Financial liabilities [Abstract]
Deposits	0
Securities sold under agreements to repurchase	0
Short-term debt	0
FHLB borrowings	0
Trust preferred capital notes	0
Accrued interest payable	0
Interest rate swap	0
Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Derivative financial instruments	0
Liabilities [Abstract]
Derivative Financial Instruments	0		0
Financial assets [Abstract]
Derivative financial instruments	0
Financial liabilities [Abstract]
Interest rate swap	0		0
Level 3 [Member] | Nonrecurring [Member]
Financial assets measured at fair value on a nonrecurring basis [Abstract]
Loans Held-for-sale	0		0
Impaired loans	3,039		3,881
Assets [Abstract]
Other Real Estate Owned at Fair Value	0		0
Financial assets [Abstract]
Loans Held-for-sale	0		0
U.S. government agencies [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	9,138		9,343
U.S. government agencies [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
U.S. government agencies [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	9,138		9,343
U.S. government agencies [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Obligations of states and political subdivisions [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	72,603		67,542
Obligations of states and political subdivisions [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Obligations of states and political subdivisions [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	72,603		67,542
Obligations of states and political subdivisions [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Mortgage-backed Securities, Agency [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	173,810		187,070
Mortgage-backed Securities, Agency [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Mortgage-backed Securities, Agency [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	173,810		187,070
Mortgage-backed Securities, Agency [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Mortgage-backed Securities, Non-agency [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	49,095		34,002
Mortgage-backed Securities, Non-agency [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Mortgage-backed Securities, Non-agency [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	49,095		34,002
Mortgage-backed Securities, Non-agency [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Corporate preferred stock [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	54		40
Corporate preferred stock [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Corporate preferred stock [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	54		40
Corporate preferred stock [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Corporate securities [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	9,719		9,976
Corporate securities [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Corporate securities [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	9,719		9,976
Corporate securities [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Trust preferred securities [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	111		269
Trust preferred securities [Member] | Level 1 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	0		0
Trust preferred securities [Member] | Level 2 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	111		269
Trust preferred securities [Member] | Level 3 [Member] | Recurring [Member]
Assets [Abstract]
Available-for-sale Securities, Fair Value	$ 0		$ 0

[1] Impaired loans are considered to have a Level III valuation methodology if the appraisal on the loan is older than two years. Transfers out of level three status represent loans for which current appraisals have been obtained or loans which have been transferred to other real estate owned and the collateral re-appraised at the time of the transfer.

[2] Other changes in the Level III balances during the period represent principal changes on level three impaired loans and minor valuation adjustments.