Non-performing Loans and Impaired Loans (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Unpaid Principal Balance total
Unpaid Principal Balance total	$ 10,054	$ 9,035
Recorded Investment total
Total ending loans balance	10,078	9,037
Allowance For Loan Loss Allocated	1,945	2,833
Average Balance in Impaired Loans total
Average Balance in Impaired Loans total	13,879	8,142
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, Total	25	17
Commercial [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	6,935	2,123
Unpaid Principal Balance With an allowance recorded	3,119	6,912
Recorded Investment total
Recorded Investment With no recorded allowance	6,959	2,125
Recorded Investment With an allowance recorded	3,119	6,912
Allowance For Loan Loss Allocated	1,945	2,833
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	10,742	1,806
Average Balance in Impaired Loans With an allowance recorded	3,137	6,336
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	25	4
Cash/Accrual Interest Income Recognized, With an allowance recorded		13
Commercial [Member] | Owner occupied real estate [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	3,310	723
Unpaid Principal Balance With an allowance recorded		1,636
Recorded Investment total
Recorded Investment With no recorded allowance	3,317	723
Recorded Investment With an allowance recorded		1,636
Allowance For Loan Loss Allocated		595
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	4,906	503
Average Balance in Impaired Loans With an allowance recorded		1,783
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	14	3
Cash/Accrual Interest Income Recognized, With an allowance recorded		1
Commercial [Member] | Non owner occupied real estate [Member]
Unpaid Principal Balance total
Unpaid Principal Balance With no recorded allowance	2,578	972
Unpaid Principal Balance With an allowance recorded	1,763	3,213
Recorded Investment total
Recorded Investment With no recorded allowance	2,579	974
Recorded Investment With an allowance recorded	1,763	3,213
Allowance For Loan Loss Allocated	1,080	1,105
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	3,793	973
Average Balance in Impaired Loans With an allowance recorded	1,774	3,186
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance	11
Cash/Accrual Interest Income Recognized, With an allowance recorded		2
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
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	135	90
Unpaid Principal Balance With an allowance recorded	564	715
Recorded Investment total
Recorded Investment With no recorded allowance	135	90
Recorded Investment With an allowance recorded	564	715
Allowance For Loan Loss Allocated	600	470
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	166	90
Average Balance in Impaired Loans With an allowance recorded	569	237
Cash/Accrual Interest Income Recognized total
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	912	338
Unpaid Principal Balance With an allowance recorded	792	1,348
Recorded Investment total
Recorded Investment With no recorded allowance	928	338
Recorded Investment With an allowance recorded	792	1,348
Allowance For Loan Loss Allocated	265	663
Average Balance in Impaired Loans total
Average Balance in Impaired Loans With no recorded allowance	1,877	240
Average Balance in Impaired Loans With an allowance recorded	794	1,130
Cash/Accrual Interest Income Recognized total
Cash/Accrual Interest Income Recognized, With no recorded allowance		1
Cash/Accrual Interest Income Recognized, With an allowance recorded		$ 4