Fair Value Measurements Estimated fair values and related carrying values of financial instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Level I [Member]
Financial assets:
Cash and cash equivalents	$ 67,343	$ 54,415
Securities available for sale	0	0
Loans held for sale	0	0
Loans, net	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 banking hedge instruments	0
Mortgage servicing rights	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Short-term debt		0
FHLB borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Mortgage banking hedge instruments		0
Level II [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale	327,935	319,457
Loans held for sale	33,175	82,114
Loans, net	5,756	11,165
Bank owned life insurance	21,955	16,484
Accrued interest receivable	3,992	3,974
Mortgage interest rate locks	16	35
Interest rate swaps	333	80
Mortgage banking hedge instruments	202
Mortgage servicing rights	203
Financial liabilities:
Deposits	959,472	984,682
Securities sold under agreements to repurchase	34,539	33,975
Short-term debt		11,873
FHLB borrowings	80,666	78,912
Subordinated notes	5,198	5,221
Accrued interest payable	501	654
Interest rate swaps	303	541
Mortgage banking hedge instruments		39
Level III [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale	488	0
Loans held for sale	0	0
Loans, net	720,483	705,193
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Mortgage interest rate locks	0	0
Interest rate swaps	0	0
Mortgage banking hedge instruments	0
Mortgage servicing rights	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Short-term debt		0
FHLB borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Mortgage banking hedge instruments		0
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	67,343	54,415
Securities available for sale	328,423	319,457
Loans held for sale	33,175	82,114
Loans, net	715,160	695,166
Bank owned life insurance	21,955	16,484
Accrued interest receivable	3,992	3,974
Mortgage interest rate locks	16	35
Interest rate swaps	333	80
Mortgage banking hedge instruments	202
Mortgage servicing rights	203
Financial liabilities:
Deposits	982,396	981,900
Securities sold under agreements to repurchase	34,539	33,975
Short-term debt		11,873
FHLB borrowings	80,000	72,912
Subordinated notes	5,155	5,155
Accrued interest payable	501	654
Interest rate swaps	303	541
Mortgage banking hedge instruments		39
Fair Value [Member]
Financial assets:
Cash and cash equivalents	67,343	54,415
Securities available for sale	328,423	319,457
Loans held for sale	33,175	82,114
Loans, net	726,239	716,358
Bank owned life insurance	21,955	16,484
Accrued interest receivable	3,992	3,974
Mortgage interest rate locks	16	35
Interest rate swaps	333	80
Mortgage banking hedge instruments	202
Mortgage servicing rights	203
Financial liabilities:
Deposits	959,472	984,682
Securities sold under agreements to repurchase	34,539	33,975
Short-term debt		11,873
FHLB borrowings	80,666	78,912
Subordinated notes	5,198	5,221
Accrued interest payable	501	654
Interest rate swaps	303	541
Mortgage banking hedge instruments		$ 39