Loans and Allowance for Loan Losses (Details 3) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	$ 525,000	$ 903,000
Total past due loans 60 - 89 Days Past Due	1,049,000	4,272,000
Total past due loans Greater Than 89 Days Past Due	10,508,000	19,049,000
Total Past Due	12,082,000	24,224,000
Total Loans Current	1,048,914,000	1,048,198,000
Total loans	1,060,996,000	1,072,422,000	1,122,999,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Commercial and industrial [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	282,000	0
Total past due loans 60 - 89 Days Past Due	197,000	2,037,000
Total past due loans Greater Than 89 Days Past Due	1,856,000	2,284,000
Total Past Due	2,335,000	4,321,000
Total Loans Current	275,093,000	262,227,000
Total loans	277,428,000	266,548,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Vacant land, land development and residential construction [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	0	0
Total past due loans 60 - 89 Days Past Due	0	145,000
Total past due loans Greater Than 89 Days Past Due	1,506,000	2,448,000
Total Past Due	1,506,000	2,593,000
Total Loans Current	57,268,000	60,874,000
Total loans	58,774,000	63,467,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Real Estate - Owner Occupied [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	0	85,000
Total past due loans 60 - 89 Days Past Due	52,000	786,000
Total past due loans Greater Than 89 Days Past Due	1,665,000	2,836,000
Total Past Due	1,717,000	3,707,000
Total Loans Current	274,644,000	260,719,000
Total loans	276,361,000	264,426,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Real Estate - Non-Owner Occupied [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	0	456,000
Total past due loans 60 - 89 Days Past Due	800,000	728,000
Total past due loans Greater Than 89 Days Past Due	4,181,000	9,837,000
Total Past Due	4,981,000	11,021,000
Total Loans Current	313,495,000	323,144,000
Total loans	318,476,000	334,165,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Real Estate - Multi-Family and Residential Rental [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	0	42,000
Total past due loans 60 - 89 Days Past Due	0	443,000
Total past due loans Greater Than 89 Days Past Due	795,000	957,000
Total Past Due	795,000	1,442,000
Total Loans Current	55,657,000	66,857,000
Total loans	56,452,000	68,299,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Total commercial [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	282,000	583,000
Total past due loans 60 - 89 Days Past Due	1,049,000	4,139,000
Total past due loans Greater Than 89 Days Past Due	10,003,000	18,362,000
Total Past Due	11,334,000	23,084,000
Total Loans Current	976,157,000	973,821,000
Total loans	987,491,000	996,905,000	1,045,406,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Retail Home Equity and Other [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	159,000	46,000
Total past due loans 60 - 89 Days Past Due	0	0
Total past due loans Greater Than 89 Days Past Due	0	242,000
Total Past Due	159,000	288,000
Total Loans Current	40,724,000	42,048,000
Total loans	40,883,000	42,336,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Retail 1-4 Family Mortgages [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	84,000	274,000
Total past due loans 60 - 89 Days Past Due	0	133,000
Total past due loans Greater Than 89 Days Past Due	505,000	445,000
Total Past Due	589,000	852,000
Total Loans Current	32,033,000	32,329,000
Total loans	32,622,000	33,181,000
Total Recorded Balance greater than 89 Days and Accruing	0	0
Total retail [Member]
Age analysis of past due loans
Total past due loans 30 - 59 Days Past Due	243,000	320,000
Total past due loans 60 - 89 Days Past Due	0	133,000
Total past due loans Greater Than 89 Days Past Due	505,000	687,000
Total Past Due	748,000	1,140,000
Total Loans Current	72,757,000	74,377,000
Total loans	73,505,000	75,517,000	77,593,000
Total Recorded Balance greater than 89 Days and Accruing	$ 0	$ 0