Loans and Allowance for Loan Losses (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 item	Sep. 30, 2013
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	$ 7,235	$ 4,203	$ 7,321	$ 4,565
Interest income recognized on an accrual basis on impaired loans	38	37	230	91
Interest income recognized on a cash basis on impaired loans	17	32	157	63
Number of points in internal risk rating system			9
Number of categories in internal risk rating system considered as not criticized			6
Maximum period above which loans past due are considered Substandard			90 days
Commercial [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	6,323	3,947	6,489	4,171
Interest income recognized on an accrual basis on impaired loans	33	35	213	85
Interest income recognized on a cash basis on impaired loans	12	30	142	56
Commercial Real Estate Portfolio Segment [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	1,740	1,956	1,854	1,864
Interest income recognized on an accrual basis on impaired loans	31	16	94	29
Interest income recognized on a cash basis on impaired loans	8	10	50	23
Acquisition and Development [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	4,583	1,991	4,635	2,307
Interest income recognized on an accrual basis on impaired loans	2	19	119	56
Interest income recognized on a cash basis on impaired loans	4	20	92	33
Residential [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	868	237	779	374
Interest income recognized on an accrual basis on impaired loans	5	2	15	5
Interest income recognized on a cash basis on impaired loans	5	2	14	6
Home Equity [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	28		28
Interest income recognized on an accrual basis on impaired loans			1
Consumer Portfolio Segment [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	16	19	25	20
Interest income recognized on an accrual basis on impaired loans			1	1
Interest income recognized on a cash basis on impaired loans			$ 1	$ 1