Non-Performing Loans and Impaired Loans (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Unpaid Principal Balance total
Unpaid Principal Balance total	$ 12,865	$ 12,115	$ 12,865	$ 12,115
Recorded Investment total
Total ending loans balance	12,904	12,562	12,904	12,562
Allowance For Loan Loss Allocated	2,403	1,806	2,403	1,806
Average Balance in Impaired Loans total
Average Balance in Impaired Loans total	12,044	10,764	9,346	9,683
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, Total	69	163	82	168
Commercial [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	7,565	4,872	7,565	4,872
Unpaid Principal Balance With an allowance recorded	5,300	7,243	5,300	7,243
Recorded Investment total
Recorded Investment With no recorded allowance	7,604	5,206	7,604	5,206
Recorded Investment With an allowance recorded	5,300	7,356	5,300	7,356
Allowance For Loan Loss Allocated	2,403	1,806	2,403	1,806
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	6,730	3,998	4,064	3,018
Average Balance in Impaired Loans With an allowance recorded	5,314	6,766	5,282	6,665
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	69	163	75	168
Cash/Accrual Interest Income Recognized, With an allowance recorded	0		7
Commercial [Member] | Owner occupied real estate [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	4,457	1,315	4,457	1,315
Unpaid Principal Balance With an allowance recorded	903	1,420	903	1,420
Recorded Investment total
Recorded Investment With no recorded allowance	4,460	1,314	4,460	1,314
Recorded Investment With an allowance recorded	903	1,420	903	1,420
Allowance For Loan Loss Allocated	450	460	450	460
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	3,810	1,224	1,978	856
Average Balance in Impaired Loans With an allowance recorded	910	1,449	1,109	1,234
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance		31	3	32
Cash/Accrual Interest Income Recognized, With an allowance recorded	0		1
Commercial [Member] | Non owner occupied real estate [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	2,521	2,403	2,521	2,403
Unpaid Principal Balance With an allowance recorded	2,938	5,499	2,938	5,499
Recorded Investment total
Recorded Investment With no recorded allowance	2,542	2,625	2,542	2,625
Recorded Investment With an allowance recorded	2,938	5,538	2,938	5,538
Allowance For Loan Loss Allocated	1,065	996	1,065	996
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	2,429	1,683	1,920	985
Average Balance in Impaired Loans With an allowance recorded	2,943	4,943	2,843	4,859
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	70	85	72	89
Cash/Accrual Interest Income Recognized, With an allowance recorded
Commercial [Member] | Residential development [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance
Unpaid Principal Balance With an allowance recorded
Recorded Investment total
Recorded Investment With no recorded allowance
Recorded Investment With an allowance recorded
Allowance For Loan Loss Allocated
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance				9
Average Balance in Impaired Loans With an allowance recorded
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance
Cash/Accrual Interest Income Recognized, With an allowance recorded
Commercial [Member] | Development & Spec Land Loans [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	131		131
Unpaid Principal Balance With an allowance recorded	658	90	658	90
Recorded Investment total
Recorded Investment With no recorded allowance	131	111	131	111
Recorded Investment With an allowance recorded	658	90	658	90
Allowance For Loan Loss Allocated	615	125	615	125
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	109		37	69
Average Balance in Impaired Loans With an allowance recorded	660	90	523	179
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	0
Cash/Accrual Interest Income Recognized, With an allowance recorded			6
Commercial [Member] | Commercial and industrial [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	456	1,154	456	1,154
Unpaid Principal Balance With an allowance recorded	801	234	801	234
Recorded Investment total
Recorded Investment With no recorded allowance	471	1,156	471	1,156
Recorded Investment With an allowance recorded	801	308	801	308
Allowance For Loan Loss Allocated	273	225	273	225
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	382	1,091	129	1,099
Average Balance in Impaired Loans With an allowance recorded	801	284	807	393
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance		47		47
Cash/Accrual Interest Income Recognized, With an allowance recorded