Loans Receivable and Allowance for Loan Losses (Past Due Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	$ 8,422	$ 9,706
60 to 89 Days Past Due	4,508	390
Greater than 90 Days	10,892	11,312
Total Past Due	23,822	21,408
Current	581,360	568,308
Total loans receivable	605,182	589,716
Loans Receivable > 90 Days and Accruing		748
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	6,882	8,662
60 to 89 Days Past Due	4,256	390
Greater than 90 Days	2,450	1,880
Total Past Due	13,588	10,932
Current	320,373	333,445
Total loans receivable	333,961	344,377
Construction and land development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	335
Greater than 90 Days	3,100	4,022
Total Past Due	3,435	4,022
Current	32,871	31,039
Total loans receivable	36,306	35,061
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Greater than 90 Days	4,184	4,673
Total Past Due	4,184	4,673
Current	98,198	82,995
Total loans receivable	102,382	87,668
Loans Receivable > 90 Days and Accruing		748
Owner occupied real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	1,020	1,043
Greater than 90 Days	505
Total Past Due	1,525	1,043
Current	110,813	101,734
Total loans receivable	112,338	102,777
Consumer and other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	185	1
60 to 89 Days Past Due	252
Greater than 90 Days	653	737
Total Past Due	1,090	738
Current	16,617	15,945
Total loans receivable	17,707	16,683
Residential mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	2,488	3,150
Total loans receivable	$ 2,488	$ 3,150