Loans and Allowance for Loan Losses (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Credit Quality Indicators
Gross Loan and Leases Receivable	$ 1,163,531	$ 1,125,289
Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	1,107,113	1,058,008
Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	17,862	19,115
Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	38,556	48,166
Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Residential 1-4 Family [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	335,075	344,029
Residential 1-4 Family [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	318,812	326,406
Residential 1-4 Family [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	10,209	9,537
Residential 1-4 Family [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	6,054	8,086
Residential 1-4 Family [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Multifamily [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	13,003	9,791
Multifamily [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	12,950	9,245
Multifamily [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	53	53
Multifamily [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable		493
Multifamily [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Commercial Real Estate [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	468,439	422,531
Commercial Real Estate [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	448,235	398,459
Commercial Real Estate [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	6,188	7,963
Commercial Real Estate [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	14,016	16,109
Commercial Real Estate [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Construction [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	189,274	166,460
Construction [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	175,042	149,451
Construction [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	235	459
Construction [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	13,997	16,550
Construction [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Farmland [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	26,754	35,691
Farmland [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	23,782	31,251
Farmland [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	38	76
Farmland [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	2,934	4,364
Farmland [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Second Mortgages [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	12,905	14,711
Second Mortgages [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	11,485	13,158
Second Mortgages [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	508	517
Second Mortgages [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	912	1,036
Second Mortgages [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Equity lines of credit [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	38,092	39,307
Equity lines of credit [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	37,496	38,803
Equity lines of credit [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	463	316
Equity lines of credit [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	133	188
Equity lines of credit [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Commercial [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	32,399	38,736
Commercial [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	32,204	37,691
Commercial [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	34	37
Commercial [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	161	1,008
Commercial [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Agricultural [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	2,421	2,556
Agricultural [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	2,396	2,534
Agricultural [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	5
Agricultural [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	20	22
Agricultural [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable
Installment and Other [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	45,169	51,477
Installment and Other [Member] | Pass [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	44,711	51,010
Installment and Other [Member] | Special Mention [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	129	157
Installment and Other [Member] | Substandard [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable	329	310
Installment and Other [Member] | Doubtful [Member]
Credit Quality Indicators
Gross Loan and Leases Receivable