Fair Value Measurements, Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Level I [Member]
Financial assets:
Cash and cash equivalents	$ 62,645	$ 54,415
Securities	0	0
Loans held for sale	0	0
Net portfolio loans	0	0
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Mortgage interest rate locks	0	0
Interest rate swaps	0	0
Mortgage servicing rights	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Short-term borrowings	0	0
FHLB borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Mortgage banking hedge instruments	0	0
Level II [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities	327,893	319,457
Loans held for sale	41,855	82,114
Net portfolio loans	3,691	1,178
Bank owned life insurance	16,851	16,484
Accrued interest receivable	3,924	3,974
Mortgage interest rate locks	651	35
Interest rate swaps	167	80
Mortgage servicing rights	155
Financial liabilities:
Deposits	961,035	984,682
Securities sold under agreements to repurchase	35,005	33,975
Short-term borrowings	5,451	11,873
FHLB borrowings	85,862	78,912
Subordinated notes	5,207	5,221
Accrued interest payable	527	654
Interest rate swaps	312	541
Mortgage banking hedge instruments	613	39
Level III [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities	485	0
Loans held for sale	0	0
Net portfolio loans	712,355	715,180
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Mortgage interest rate locks	0	0
Interest rate swaps	0	0
Mortgage servicing rights	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Short-term borrowings	0	0
FHLB borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Mortgage banking hedge instruments	0	0
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	62,645	54,415
Securities	328,378	319,457
Loans held for sale	41,855	82,114
Net portfolio loans	702,724	695,166
Bank owned life insurance	16,851	16,484
Accrued interest receivable	3,924	3,974
Mortgage interest rate locks	651	35
Interest rate swaps	167	80
Mortgage servicing rights	155
Financial liabilities:
Deposits	958,566	981,900
Securities sold under agreements to repurchase	35,005	33,975
Short-term borrowings	5,451	11,873
FHLB borrowings	85,000	72,912
Subordinated notes	5,155	5,155
Accrued interest payable	527	654
Interest rate swaps	326	541
Mortgage banking hedge instruments	613	39
Fair Value [Member]
Financial assets:
Cash and cash equivalents	62,645	54,415
Securities	328,378	319,457
Loans held for sale	41,855	82,114
Net portfolio loans	716,046	716,358
Bank owned life insurance	16,851	16,484
Accrued interest receivable	3,924	3,974
Mortgage interest rate locks	651	35
Interest rate swaps	167	80
Mortgage servicing rights	155
Financial liabilities:
Deposits	961,035	984,682
Securities sold under agreements to repurchase	35,005	33,975
Short-term borrowings	5,451	11,873
FHLB borrowings	85,862	78,912
Subordinated notes	5,207	5,221
Accrued interest payable	527	654
Interest rate swaps	326	541
Mortgage banking hedge instruments	$ 613	$ 39