Loans and the Allowance for Credit Losses (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012 Contract	Jun. 30, 2012 Contract
Loans Identified as TDRs
Number of contracts	8	18
Pre modification outstanding recorded investment	$ 1,325	$ 2,624
Post modification outstanding recorded investment	1,333	2,638
Commercial Real Estate Land and Construction [Member]
Loans Identified as TDRs
Number of contracts	2	2
Pre modification outstanding recorded investment	756	756
Post modification outstanding recorded investment	756	756
Commercial Real Estate Improved Property [Member]
Loans Identified as TDRs
Number of contracts	2	8
Pre modification outstanding recorded investment	364	1,268
Post modification outstanding recorded investment	363	1,266
Commercial Real Estate [Member]
Loans Identified as TDRs
Number of contracts	4	10
Pre modification outstanding recorded investment	1,120	2,024
Post modification outstanding recorded investment	1,119	2,022
Commercial and Industrial [Member]
Loans Identified as TDRs
Number of contracts	2	2
Pre modification outstanding recorded investment	39	40
Post modification outstanding recorded investment	38	38
Residential Real Estate [Member]
Loans Identified as TDRs
Number of contracts	2	6
Pre modification outstanding recorded investment	166	560
Post modification outstanding recorded investment	176	578
Home Equity [Member]
Loans Identified as TDRs
Number of contracts	0	0
Pre modification outstanding recorded investment	0	0
Post modification outstanding recorded investment	0	0
Consumer [Member]
Loans Identified as TDRs
Number of contracts	0	0
Pre modification outstanding recorded investment	0	0
Post modification outstanding recorded investment	$ 0	$ 0